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Full text of "The Gold Bond handbook on relatd products for walls and ceilings."

CATALOG OF GOLD BOND 



WALL AND CEILING 



BUILDING MATE RIALS 



1940 



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Copyright, 1940 t-3 

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National Gypsum Company 

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(Prepared by Sweet's Catalog Service) 



PRINTED IN U.S.A. 

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DISTRICT SALES OFFICES 



THE 

Gold 3ond 

HflnDBOOK 



ON RELATED PRODUCTS 
FOR WALLS and CEILINGS 



Manufactured by National Gypsum 
Company and sold through 10,000 
dealers in the United States ... A 
complete service in related wall and 
ceiling building materials controlled 
and guaranteed by one company. 



NEW YORK, N. Y. 
CHICAGO, ILL. 



BOSTON, MASS. 



Graybar Building 
Conway Building 
Consolidated Gas Bldg. 



PHILADELPHIA, PA. Lincoln-Liberty Bldg. 



BALTIMORE, MD. 
ATLANTA, GA. 
DALLAS, TEX. 
ST. LOUIS, MO. 



Baltimore Trust Bldg. 

C. and S. Nat'l Bank Bldg. 

Burt Building 



4030 Chouteau Ave. 



KANSAS CITY, MO. Dierks Building 
MINNEAPOLIS, MINN. National Bldg. 



BIRMINGHAM, ALA. First National Bldg. 


LOCATION OF 


PLANTS 


NEW YORK, N. Y. 


AKRON, N. Y. 


PORTSMOUTH, N. H. 


LUCKEY, OHIO 


CLARENCE CENTER, N. Y. 


ORANDA, VA. 


NATIONAL CITY, MICH. 


ROTAN.TEX. 


MEDICINE LODGE, KAN. 


MOBILE, ALA. 


FORT DODGE, IOWA 


NILES, OHIO 


SAVANNAH, GA. 


YORK, PENNA. 


SALTVILLE, VA. 



NATIONAL GYPSUM COMPANY 



GENERAL OFFICES, BUFFALO, N. Y. 



THE GOLD BOND HANDBOOK 

TABLE OF CONTENTS 

Pages 
Introduction 3. 12 

SECTION I— GOLD BOND PLASTER BASES 

Gold Bond Standard Gypsum Lath 14 

Gold Bond Perforated Gypsum Lath 15 

Gold Bond "Floating Wall" System 16-18 

Gold Bond Metal Lath Products and Metal Partition Systems 19-26 

Gold Bond "Clip-On" Ceilings and Partitions 27-28 

Gypsum Partition Tile and Roof Tile 29 

Poured Gypsum Floors and Roofs 30 

SECTION 2— GOLD BOND PLASTER, LIME, PAINT AND TEXTURE 

Gold Bond Gypsum Plasters 32-39 

Best Bros. Keene's Cement Products 40 

Gold Bond Finish Lime and Mason's Lime 41 

Gold Bond Color Texture 42-43 

Gold Bond Casein Paste Paint 44-45 

Gold Bond Pigmented Primer 45 

Gold Bond Mortar Colors 45 

Gold Bond Spackling Compound 45 

Gold Bond Calcimine 46 

Master Specifications for Lathing and Plastering 47-53 

SECTION 3— GOLD BOND GYPSUM WALLBOARDS AND HARDBOARDS 

Gold Bond Gypsum Wallboard _ 56-57 

Gold Bond Joint Systems 5g 

Standard Specifications for Gypsum Wallboard 59 

Gold Bond Gypsum Grain Board 60-61 

Gold Bond Gypsum Sheathing 62-63 

Gold Bond Gypsum Tile Board 54 

Gold Bond Hardboards 65 

SECTION 4— GOLD BOND INSULATION PRODUCTS 

Gold Bond Fibre Insulation Board, Plank, Tile, Sheathing, Lath 68-78 

Gold Bond Gypsum Wallboard and Lath with Aluminum Foil Insulation ...... 79 

Gold Bond Rock Wool Insulation , 80-81 

Gold Bond Dry Fill Insulation 82 

SECTION 5— GOLD BOND SOUND CONTROL PRODUCTS 

Gold Bond Acoustimetal _ 84-85 

Gold Bond Acoustex 86 

Gold Bond Econacoustic 87 

Gold Bond Trowel Finish Macoustic 88-89 




M. H. BAKER, President 



NATIONAL GYPSUM COMPANY supplies through its 10,000 dealers a full line of build- 
ing products comprising practically every type of material required for approved wall and 
ceiling construction and interior finish. 

Included are gypsum wallboards in plain, wood grain and tile finishes, five kinds of lath, base 
and finish plasters, acoustical products and sound absorbing tiles, lime, casein paint, textures, 
hardboards, and a complete line of aluminum foil, rock wool and fibre insulation products. 
Over 150 guaranteed wall and ceiling building materials and all supplied under the one trade 
name . . . "Gold Bond." 

Twelve district sales offices plus a large corps of field representatives, specially trained in wall and 
ceiling construction, offer constant sales co-operation to Gold Bond Dealers. And fifteen mod- 
ern plants, strategically located in the South, Central and Eastern sections of the country, insure 
the utmost in service. 

In the fifteen years of National Gypsum's existence, a reputation for uniform high quality 
has been built up for its products among architects, contractors and dealers. No matter what the 
item may be, the name "Gold Bond" today earns immediate acceptance for it in the building 
world. As president of this organization, I promise that this reputation shall be maintained. 




NATIONAL GYPSUM COMPANY 



>■ FIFTEEN GOLD BOND PLANTS TO SERVE YOU 



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Savannah, Ga. . . . The most modern gypsum plant in the country and incidentally the newest in the Gold Bond chain. With 
building on the upgrade and big jobs developing almost overnight, service on shipments really counts these days. Gold Bond 
Dealers in the Southeast are assured of quickest service with this immense plant "right in their own backyard." 



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TWO OF THE TEN MAMMOTH GYPSUM PLANTS 




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(above) Note the streak of light on the surface of this 
panel. Another adaptation of the "electric eye." This 
modern device operates a mechanical cut-off, insuring 
accurate board lengths. 



(left) National City, Mich., Plant. Insures quick service 
to Detroit and Chicago markets. Shipments also move 
cross-lake to Milwaukee and other Wisconsin points. 



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NEW HAMPSHIRE 



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BRONX GYPSUM PLANTS 



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(above) Gypsum Mill at Portsmouth, N. H. One 
of the largest in the Gold Bond group of plants. 
The complete line of Gold Bond Gypsum Products 
Is manufactured here including Board, Lath, Plas- 
ter, Super-white Gauging and Moulding and Gyp- 
sum Partition Tile. Located within 60 miles of 
Boston and serves New England markets. 



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(below) Cargoes of select gypsum rock are un- 
loaded at the New York City plant every few days. 
The immense traveling gantry unloading crane pic- 
tured here unloads a full cargo in 12 hours. 



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(above) New York City Plant. Ideally located for 
quick pickups by dealers in the Metropolitan area. 
Here is manufactured a full line of Gypsum Plasters, 
Gauging and Moulding, also paint products includ- 
ing Sunflex and Gold Bond Casein Paint, Cement 
Paint and Craftcx. 

A two million dollar expansion program is now 
under way at this plant, which includes a mammoth 
new gypsum board mill — these improvements to be 
completed in May, 1940. 



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VIEWS IN GYPSUM PLANTS and QUARRY * 




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The immense dryer at the new Savannah Plant. At the right is shown gypsum lath (three 16" width panels) on the forming 
belt. At the end of this 600 ft. runway, gypsum lath and gypsum wallboard are cut into standard lengths and sent through 
the huge oven which dries the gypsum core slowly and uniformly. When the panels leave the dryer, they are thoroughly 
"seasoned" and ready for use. 



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(below) Gypsum quarry at National City, Mich. Here the 
vein of gypsum rock is only a few feet below the surface. A 
Diesel-driven "stripper" removes the top dirt and exposes the 
precious white rock. 



(below) This gasoline motor-hoist piles a ton and a half of 
plaster 20 ft. high, in one operation. This is white moulding 
plaster. Base plaster is never stored at the plants and is 
generally shipped the same day that it is made. 





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>■ NEW INSULATION PLANT IN MOBILE, ALA 



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METAL LATH PRODUCTS and CASEIN PAINT z 

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(above) Metal Lath Plant at Niles, Ohio. Here is manu- 
factured a full line of Metal Lath, Corner Beads and other 
accessories. Two important additions to the Gold Bond 
Line ... a combination Arch-Corner Bead and a new style 
y ,& -in. Flat Rib Lath, were recently developed at this plant. 



(below) Making Gold Bond Casein Paint at the Bronx Plant. 
This finer "one hour" interior paint is the choice of decorators 
for its velvety smoothness, greater hiding power and delicate 
fade-proof colors. Light reflection for the White has been 
stepped up to over 98%. 



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LIME QUARRY 



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FINISH LIME PLANT 



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(above) Gold Bond's immense lime quarry at Luckey, Ohio, (below) Model Gold Bond Lime Plant at Luckey, Ohio, termed 
in the heart of the rich Ohio dolomite lime field. Ohio finish by experts the finest in the country. Constant laboratory super- 
lime is known the country over for its purity, whiteness and vision plus the most modern equipment, including automatically 
all-around superior quality. Only the whitest rock is used. controlled furnaces, insure uniformity of quality. 




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AGRICULTURAL AND INDUSTRIAL LIME * 




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(above) Lime Plant at Oranda, Va. Limestone mined here and (below) Lime Plant at York, Pa. Specializes in the manufac- 

at the York, Pa., Plant excels in purity and high-calcium con- ture of high-calcium lime products for industrial and chemical 

tent. Oranda specializes in Agricultural and Spray Lime, also purposes, used in the manufacture of paper, bricks, and steel 

Mason's and Industrial Lime for Chemical uses. products; for water softening and for dozens of other uses. 



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>■ GOLD BOND'S NEW RESEARCH LABORATORIES 



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Research and laboratory control have played 
major parts in Gold Bond's progress. The new 
laboratory pictured here with its staff of re- 
search experts . . . men who are specialists in 
building materials and construction . . . reflects 
the importance that National Gypsum places 
on this phase of the business. The complete 
responsibility for the maintenance of Gold 
Bond quality standards and the development of 
new products is in the hands of this department, 



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SECTION ONE 



GOLD BOND 

PLASTER BASES 



Page 14 
STANDARD GYPSUM LATH 

Page U 
PERFORATED GYPSUM LATH 

Pat>es 16-18 

"FLOATING WALL" SYSTEM 

Pages 19-26 

METAL LATH and ACCESSORIES 

Pages 27-28 

"CLIP-ON" SYSTEMS 

For Suspended Ceilings 

For 2-Inch Solid Partitions 

Page 29 

GYPSUM PARTITION TILE 

GYPSUM ROOF TILE 

Page 30 

POURED GYPSUM FLOORS and ROOFS 

Page 78, Sect ion Four 

FIBRE INSULATION LATH 

Page 79. Section Four 

GYPSUM LATH 

With Aluminum Foil Insulation 

Pages 47-53, Section Two 

SPECIFICATIONS . . . LATH and PLASTER 




>- GOLD BOND STANDARD GYPSUM LATH 



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The Modern Piaster Base with Core of Solid Gypsum 
Builds Stronger Walls and Ceilings 



QOLD BOND GYPSUM LATH is made under the same ex- 
^* elusive patents as Gold Bond Gypsum Wallboard, the only 
difference being that the sizes are smaller and the gypsum core 
is encased in a heavy fibre sheet that bonds tightly with plaster, 
The long sides have closed edges and are round, as illustrated. 
The short ends are cut perfectly square. 



Superior Bond to Plaster 

The bond of plaster to Gold Bond Gypsum Lath is not de- 
pendent on mechanical keys but is obtained by the felting action 
of billions of gypsum crystals in the set plaster embedding them- 
selves onto the surface of the Gold Bond Gypsum Lath during 
the setting action. Authoritative tests have shown this bond to 
be four times as great as any mechanical bond such as that 
obtained on wood lath, metal lath, etc. 



Fireproof . . . Adds Structural Strength 

The solid gypsum core of Gold Bond is non-inflammable and 
non-combustible. In repeated blow-torch tests, has demonstrated 
its ability to resist fire. Numerous testimonial letters have been 
received telling how effectively Gold Bond has withstood scorch- 
ing flames and prevented the spread of fire by protecting the 
wood studs. 

The strength and rigidity imparted to walls and ceilings by the 
use of Gold Bond Gypsum Lath adds considerably to the struc- 
tural strength of the building as a whole. When covered with 
V2 inch of plaster, it makes a wall % inch thick . . . solid 
gypsum rock. 



Won't Warp or Buckle — Saves Plaster Cracks 

Gold Bond Gypsum Lath will not expand, contract, warp or 
buckle. One of the chief reasons for plaster cracking is the twist- 
ing or warping of the lath. This can't happen with Gold Bond 
as the rock-like panels lay perfectly flat and are not affected by 
dampness or climatic changes. 



Cuts Labor Cost and Saves Plaster 

With wood lath, spaces are left between the laths and much 
of the plaster goes into these spaces to form "keys." No "keys" 
are required with Gold Bond. The sturdy panels are butted 
together and all the plaster goes on the surface of the lath. This 
saving of plaster is considerable on a house of average size. 

Application costs are cut, too, as the large panels of Gold 
Bond are applied much quicker than the narrow wood lath strips. 
Only 16 nails are needed to a 16" x 48" panel — 4 nails to each 
stud — studs and joists to be spaced 16" on centers. 




Showing the distinctive indented surface of Gold Bond 
Gypsum Lath. The solid gypsum core is encased in this 
tough fibre covering. 



Sizes and Thicknesses 



%" Thick 

W Thick 

%" Thick 

1/2" Thick 

1/2" Thick 

i/ 2 " Thick 



16" x 32" 
16" x 36" 
I6"x48" 
I6"x32" 
16" x 36" 
I6"x48" 



6 panels per bdle. 
6 panels per bdle. 
6 panels per bdle. 
6 panels per bdle. 
6 panels per bdle. 
6 panels per bdle. 



21% sq.ft. 

24 sq. ft. 
32 sq.ft. 
21 Va sq.ft. 
24 sq. ft. 
32 sq. ft. 



Also made under the name Gold Bond Liner Board with 
non-indented surface. . . Thicknesses of 14", %" and y 2 " . 
Sizes of 24"x48", 32" x 36" and 32"x48". 

Gold Bond Gypsum Lath comes in handy bundles that are 
light and easy to handle. A bundle of 16" x 48" x %" con- 
tains 6 panels. 




For Gold Bond Gypsum Lath with Aluminum Foil Insulation, See Page 79. 



14 



GOLD BOND PERFORATED GYPSUM LATH 

Embodies All the Features of Standard Gypsum Lath 
Plus the Important Advantage of Greater Fire Protection 



QOLD BOND PERFORATED GYPSUM LATH is standard 

lath with holes about the size of a nickel drilled through 
the panels. When the surface is plastered, enough of the plaster 
is forced through the perforations to form mushroom-like "keys" 
as pictured in the next column. Insures a double bond with 
plaster— the natural or chemical bond that occurs between the 
indented surface of the lath and the plaster, plus the mechanical 
bond provided by the "keys." 

The perforations are so staggered to minimize the number of 
holes across the width of the panels, thereby achieving the advan- 
tage provided by the perforations without sacrifice of strength. 

One Hour Fire Rating 

Gold Bond Perforated Gypsum Lath has qualified for a one hour 
fire rating for walls and ceilings when applied as follows: 
Walls— Gold Bond y 8 in. Perforated Gypsum Lath plastered in the 

usual manner with y 2 in. of gypsum plaster. 
Ceilings— Gold Bond % in. Perforated Gypsum Lath applied with 
five nails to each joist, Gold Bond 3 in. Stripire over all 
joints and plastered with l/ 2 in. thick of gypsum plaster. 
These official tests were made according to Standard Specifica- 
tions of Fire Tests of Building Constructions and Materials 
ASA No. A2, 1934. 

Other Advantages That Combine to Make 
This an Outstanding Plaster Base 

In addition to its one-hour fire rating, Gold Bond Perforated 
Gypsum Lath offers these important advantages over old-style 
inflammable wood lath: It is moisture proof and unaffected by 
climate changes. Won't expand, contract, buckle or twist. The 




rock-hke panels add greater strength so that the plaster walls and 
cedings are better able to withstand structural strains. Homes in 
which this fireproof modern plaster base is used have an extra 
appeal to prospective buyers. 

Application 

Gold Bond Perforated Gypsum Lath 'is applied the same as 
standard gypsum lath . . . four nails to each stud— the nails to 
be 4 in. apart and % in. from edge. For ceilings with one hour 
fire rating, follow instructions under "One Hour Fire Rating" in 
first column. 

Size and Thickness 

Gold Bond Perforated Lath is % in. thick and supplied in 
two sizes, 16x32 in. and 16x48 in. Packed 6 panels to a bundle. 



Mushroom -like keys 
automatically form 
on the reverse side 
which grip the lath 
tightly. 




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Sturdy, rock-like panels of Gold Bond Perforated Gypsum As the plaster is trowelled on the workman can feel the perfo- 
rm are applied quicker than wood lath and give wood fram- rations take hold. The small picture above shows what actually 
ing the hre protection it needs, 



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happens on the reverse side of the lath. 



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THE GOLD BOND "FLOATING WALL" SYSTEM 

A New Patented Method of Building Walls and Ceilings 

With "Free Action" to Withstand Structural Strains and Vibrations 

Cuts Room-to-Room Noise . . . One Hour Fire Rating for Walls 



THE GOLD BOND "Floating Wall" System promises to com- 
pletely revolutionize old-time methods. It provides the three 
all-important features of better wall and ceiling construction so 
much desired by every home builder but previously denied be- 
cause of prohibitive cost. 

The entire system is built around a new type of lath nail — 
the "Floating Wall" nail — a large headed nail, with the head 
encased in deadening felt in such a way as to provide resiliency 
. . . then reinforced with a double thickness of expanded metal 
. . . and the whole fabricated into one convenient unit for the 
father. These special nails are used between the panels of Gold 
Bond Gypsum Lath, building an elastic "Floating Wall," free 
from rigid attachments to framing members. No plaster can 
touch the head of nail ... no direct metallic contact between 
plaster and wood framing. 

Provides New Features Never Before 
Obtainable in Moderately Priced Homes 

The Gold Bond "Floating Wall" System insures these added 
advantages: (l) The danger of plaster cracks occurring from 
vibration or settling of the building is practically eliminated. 
(2) Sound transmission from one room to another is effectively 
checked. (3) One hour fire protection is provided for the wood 
framing. Heretofore, only hotels, fine buildings and the better 
class of apartments could boast of these features. Now they can 
be built into homes in every price class from a $2,500 cottage 
to a $60,000 mansion. 




The "Floating Wall" Nails are driven 
between the panels of gypsum lath. 



The "Floating Wall" Nail 



(below) The extra-large nail 
head is encased in a felt 
jacket. 




(above — left) 

Showing the felt covered by the metal reinforcing with the 

large head of the nail dotted in. 

Added Cost Per Home Is Only a Few Dollars 

No special skill is required to erect walls and ceilings by this 
new method. Lathers get the "hang" of it in a few minutes and 
if anything, labor cost is less. The only special material required 
is the "Floating Wall" nails. They cost a little more than stand- 
ard nails but only four "Floating Wall" nails are used along 
edge of each 48 in. gypsum lath panel, as compared with sixteen 
nails per panel under the former method. 




A typical "Floating Wall" job ready 
for plastering in the regular manner. 



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The Gold Bond "Floating Wall" System (Continued) z 



(1) Provides Resiliency . . . Lessens the Danger of Plaster Cracks 



The chief reason for plaster cracks is the natural movement of 
framing members. There is no way to avoid this movement 
which in most cases is almost imperceptible. What the "Floating 
Wall" does is to get around the motion, so that although it still 
exists, it can do no harm to the plaster wall or ceiling. 

Under normal conditions, with a completely rigid tie to the 
studs and joists, the twisting or warping of the framing mem- 
bers of even a few thousandths of an inch can result in 
plaster cracks. The "Floating Wall" system provides a resilient 
tie between the stud and the plaster itself. In effect the wall 
actually "floats" although strong and rigid and outwardly no dif- 



ferent in appearance than a wall of conventional construction. 
Months of careful testing in the Gold Bond Laboratories and 
systematic checking of actual jobs prove the "Floating Wall" 
system is crack resistant almost beyond belief. In a typical deflec- 
tion test, a series of identical wall areas were built with wood 
lath, gypsum lath and the Gold Bond "Floating Wall" System - 
then plastered under standard specifications. At i/ a in. deflection' 
the first crack appeared in the plaster over wood lath Over 
Gypsum lath, cracks appeared at a deflection of i/ 4 in. Deflection 
of l3/ 8 m. was needed to put a hair-line crack in the "Floating 
Wall." As every builder knows, deflection of 1% in. is almost 
inconceivable on an actual job. 



(2) Reduces Sound Transmission from Room to Room 



Walls built to resist passage of sound from one room to an- 
other have always been impractical in standard residential con- 
struction for the same reason that crack-proof walls and fire- 
proof walls have been out of the question — high cost. Now, with 
the "Floating Wall" System, at little or no extra cost, all three 
features can be provided in one operation, 

Sound Transmission Loss is the measure of effectiveness that a 
wall, ceiling or floor area retards the passage of sound through 



the structure. This value is measured in decibels which are 
simply units of sound intensity in scale of audibility. 

In a test made by the National Bureau of Standards in Wash- 
ington, D. C, the "Floating Wall" received an average trans- 
mission loss of 47.6 decibels. This rating reflects the amount of 
sound that is actually lost or dissipated— enough to completely 
nullify the passage of ordinary conversational sounds through a 
wall partition from one room to another. 



(3) One Hour Fire Rating For Walls . . . Protects Wood Framing 



The chief function of "fire-proof" construction in residential 
building is its ability to retard the spread of fire for a reasonable 
length of time— long enough for fire apparatus to arrive. 

To prove the effectiveness of the "Floating Wall" construc- 
tion to withstand fire, tests were conducted in a leading labora- 
tory in accordance with standard fire test specifications, A2-1934. 

A standard wood frame partition approximately 16 ft. x about 
10 ft. 4 in. was constructed with Gold Bond Gypsum Lath on 
each side, applied with "Floating Wall" nails. Each face was 



finished in the regular manner with l/ 2 in. Gold Bond Plaster 
and lime putty. During the test a load equal to the allowable 
working load on the net area of the wood studs was applied 
totaling about 15 tons for the 16 ft. wide partition. 

At the end of the test this "Floating Wall" was shown to have 
qualified for a one hour fire rating for walls under the American 
Standard Association regulations. This means that this type of 
construction can stop the spread of fire for at least one hour 
under normal conditions. 






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No special equipment needed except the 

"Floating Wall" nails which are sold by 

Gold Bond dealers along with the Gold 

Bond Gypsum Lath. 



Lath is applied to ceilings the same as 
to side walls except an extra row of 
nails is used along the center of the 
panels. See detail drawing on next page. 



Plastering is done in the usual manner. 
The expanded metal over the nail heads 
acts as extra reinforcing and insures uni- 
form thickness of plaster. 



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> The Gold Bond "Floating Wall" System (Continued) 



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STANDARD SPECIFICATIONS 

Scope of Work 

Gold Bond "Floating Wall" System shall be used in the 
following locations: 

(List) 

Examination of Framing Structure 

Lather shall examine all framing for accuracy and proper nail- 
ing before applying lath. Openings shall be framed and elec- 
trical outlets properly located. Any defects shall be reported to 
architect and no lathing shall be done until such defects have 
been corrected. 

Material 

1. All materials shall be manufactured by the National 
Gypsum Company and shall be delivered to the job in their 
original containers. 

2. Lath— Gold Bond Gypsum Lath (16 in. x 48 in. x % in. 
thick). 

3. Nails— Gold Bond "Floating Wall" nails shall be used 
exclusively. 

4. Joint Reinforcing — Gold Bond Galvanized Corner Bead 
for external angles. Gold Bond 3 in. Cornerite for internal 
angles. 

5. Plaster 

a. Base Coat — Gold Bond Plaster (specify type). 

b. Finish — Gold Bond Finish Lime with Gold Bond Super- 
white Gauging Plaster. Alternates — Gold Bond Smooth Trowel 
Finish, Gold Bond Sand Float Finish, Gold Bond Color Texture. 

Application 

1. All walls, ceilings, and partitions as specified shall be 
covered with Gold Bond Gypsum Lath. Studs and joists shall be 
spaced 16 in. on centers. 

2. Lath shall be applied with back of lath facing stud, joists 
or furring, taking care to break joints. Vertical joints shall not 
occur opposite each other on same stud. 

3. Lath shall be cut by scoring with a knife or hatchet and 
then break over a straight edge. 

4. Lath (16 in. x 48 in.) shall be nailed to sidewalls with 
four "Floating Wall" nails driven in the joints between the 
lath at each stud. Ceilings shall be nailed as above together 
with one "Floating Wall" nail driven midway between folded 
edges at each joist or furring strip. Core of boards shall be 
ruptured with point of lather's hatchet where "Floating Wall" 
nails are not placed in between joints. 

5. Any openings for outlet boxes, etc., shall be clean and 
neatly fitted to proper sizes and location. 



Showing Wall and Ceiling Placing of 
Gold Bond "Floating Wall n Nails 



Reinforcing Angles 



1. All internal angles of walls and ceilings shall be reinforced 
with Gold Bond 3 in. Cornerite and securely nailed. 

2. All external angles shall be reinforced with Gold Bond 
Corner Bead (specify style) securely nailed. 

Plastering 

Follow standard specifications for plastering over gypsum lath. 
Plaster shall be full y 2 in. thick. 




Wall Treatment— Four "Floating Wall" Nails are used along 
the 48 in. side of each panel of Gold Bond Gypsum Lath, 

Ceiling Treatment — Same as for walls except there is an extra 
row of nails along the center of the lath panels (as indicated by 
arrows in above drawing), one center nail to each stud. The 
lath should be punctured with point of lather's hatchet to provide 
holes for the center nails. 

Internal corners should be reinforced with 3 in. Gold Bond 
Cornerite. External corners should be covered with Gold Bond 
Corner Bead. 



Patented and Exclusive to Gold Bond 

The Gold Bond "Floating Wall" System is patented and avail- 
able only through bona fide Gold Bond dealers . . . Upon re- 
quest, National Gypsum Company will send, gratis, an illustrated 
book describing this system in detail. 



18 



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Making the New Style Flat Rib Lath at Gold Bond's Metal Lath Plant in Niles, Ohio 



GOLD BOND METAL LATH PRODUCTS 

Most Gold Bond Metal Lath Products Are Made From Steel Sheets 
Manufactured by the Open Hearth Process 




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ational Gypsum Company manufactures at its Niles, Ohio 
plant a full line of metal lath products and accessories. 



For years metal lath, because of its unmatched strength and 
one hour fire rating for both walls and ceilings, has been in- 
variably specified as the plaster base for buildings and the better 
class of homes. Lately it has come into common use for all 
types of residences including homes costing as little as $4,000. 
As one expert puts it, "Savings realized on repair and decorating 
bills over the years are every bit as important to owners of 
small homes as to those who own mansions." 

The National Board of Fire Underwriters gives Metal Lath 
with gypsum plaster on wood studs a one hour fire rating; 
second only to reinforced concrete and above all others in resist- 
ance to earthquake and explosion shocks. 

Only a few of the most commonly used products are pictured 
here, including the new Arch Corner Bead, an exclusive Gold 
Bond feature. Other products are: Corner Beads (5 in. Wing, 
Expansion, Scalloped, Wide Flange, Standard Bull Nose and Bull 
Nose Expansion), Base Beads (Curved Point and Expansion 
Flush), Corner Bead Clips and Channel Clips, Hot Rolled Chan- 
nels, Galvanized Tie Wire, Pencil Rods, Coal Doors and Steel 
Basement Sash. 

An illustrated catalog describing the complete line will gladly 
be furnished by writing Metal Lath Division, National Gyp- 
sum Company, Buffalo, N. Y. 




Partitions made of Gold Bond Metal Lath and plastered 
in the customary way are rated by the National Board of 
Fire Underwriters as second only to reinforced concrete. 



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GOLD BOND METAL LATH 

Gold Bond Small Diamond Mesh Lath 

Can be used on any type of metal lath job. It constitutes better than 
50% of all the metal lath sold. 

Gold Bond Small Mesh boasts of having as small a mesh as any dia- 
mond mesh manufactured ; containing approximately 3000 more keys per 
square yard than the regular % in. mesh. All sheets lay perfectly flat 
and each sheet has re-squared ends assuring full covering width. Regular 
y s in. mesh can be furnished upon request. Is made from open hearth 
box annealed sheets. 

Standard Weights — 2.2, 2.5, 3.0, 3.4 lb. Furnished in painted steel, 
copper bearing and Armco Iron. Galvanized in 2.5 and 3.4 lb. only. 
Sheet Sizes 

— 24 in. x 96 in. 9 sheets per bundle or 16 sq. yds. 
— 27 in. x 96 in. 10 sheets per bundle or 20 sq. yds. 

Gold Bond j/ 8 -in. Flat Rib Lath 

Primarily designed to meet a growing demand for a more rigid ex- 
panded metal lath, and a more economical plastering job . . . 1280 
meshes to a square foot, providing more plaster keys than any other like 
product on the market. 

Gold Bond Vs-'m, Flat Rib saves time and money in erection costs as 
the new size — 27 x 96 in. — can be applied in exactly the same time as 
the usual 24 x 96 in. sheets. 

Standard Weights — 2.75, 3.0 and 3.4 lb. Furnished in painted steel 
and copper bearing steel. Galvanized in 3.4 lb. only. 

Sheet Sizes 

— 24 in. x 96 in. 9 sheets per bundle or 16 sq. yds. 
— 27 in. x 96 in. 10 sheets per bundle or 20 sq. yds. 

Gold Bond 3/ 8 -in. Rib Lath 

Is generally used for ceiling and for concrete reinforcing in floors in 
connection with steel joists, junior beams, etc. 

Gold Bond % in. Rib Lath is outstanding for its rigidity. Ribs are 
4 in. on center. Sheets nest perfectly when lapped providing a smooth 
base for plaster, with bulges eliminated and plaster waste reduced. Man- 
ufactured from open hearth box annealed sheets. 

Standard Weights— 2.5, 3.0, 3.4 and 4.0 lb. Furnished in painted cop- 
per bearing steel and Armco Iron. Galvanized in 3.4 lb. only. 

Sheet Size— 24 in. x 96 in. 9 sheets per bundle or 16 sq, yds. 

Gold Bond %-in. Rib Lath 

Used mainly as a form and reinforcement in concrete slab floor and 
roof construction. Won't bulge or sag. Ribs are spaced 4 in. on centers 
% in. deep. . . . Also adapted for use as a plaster base in the construction 
of 2-in. solid partitions. Due to the rigidity and reinforcing feature of 
the ribs, no studs are required. 

Standard Weights — .50 lb., .60 lb., .75 lb. per sq. ft. Furnished in 
painted steel and copper bearing steel. Galvanized in .50 lb. and .75 lb. 
weights. Armco or pure iron in .75 lb. weight. 

Sheet Sizes — 24 in. x 6, 7, 8, 9, 10, 11, 12 ft. 9 sheets per bundle. 

Bostwick Sheet Lath 

Is used generally for tile backing due to its being the most rigid lath 
manufactured. It requires considerably less plaster than any other type 
of metal lath and therefore, is often used on residences and large apart- 
ment buildings. The trough formation of the ribs creates a suction and 
makes it the ideal lath for overhead work on ceilings. Manufactured from 
open hearth annealed sheets. 

Standard Weights — 4.5 lb. in painted and 5.5 lb. in galvanized. 

Sheet Size — -24 in. x 96 in. 9 sheets per bundle or 16 sq. yds. 



20 







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Gold Bond % -in. Rib Lath 




Bostwick Sheet Lath 



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GOLD BOND METAL LATH ACCESSORIES z 






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Gold Bond Arch Corner Bead 



Gold Bond Arch Corner Bead 3> 

Use— Gold Bond Arch Corner Bead is the all-purpose corner bead. Used 

for vertical and horizontal corners or may be easily bent for arches. Full "H 
description on next page. 

Stock Lengths — 6, 7, 8, 9, 10 and 12 ft. Made in 26 gauge. 24 gauge on ™ ' 
special order. Packed 10 pieces per bundle. Weighs 200 lbs. per 1000 lin. ft. 




Gold Bond Standard Expansion 
Corner Bead 



Gold Bond Standard Expansion Corner Beads 

Use — Gold Bond Standard Expansion Corner Beads can be used in all types 
of construction. Forms an exceptionally fine key due to the reinforcing given 
by the 2'/2 &• wings. Is easily erected. 

Stock Lengths — 6, 7, 8, 9, 10 and 12 ft. Made in 26 gauge. 24 gauge on 
special order. Shipped in crates of approximately 500 or 1000 ft. only. Weighs 
208 lbs. per 1000 lin. ft. 




Gold Bond Stripite 




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Gold Bond Standard Base Bead 




Gold Bond Stripite 



Use — Gold Bond Stripite is diamond mesh lath cut into strips. Used over 
joints, around window and door frames in construction where metal lath is not 
used throughout. Standard in painted steel. May be had in copper bearing or 
galvanized steel. 

Sizes — 2, 3, 4, 6 or 12 in. wide by 96 in. long. Packed 63 pieces per bun- 
dle (504 lin. ft.) 3x96 in. Stripite weighs 60 lbs. per 1000 lin. ft. 



Gold Bond Standard Base Bead 

Use — Gold Bond Standard Base Bead is used as a ground where the cement 
base is to be divided from the plastered wall. Assures a straight and perfect 
division line. Made in both V2 an d 3 A m - ground. 

Stock Length — 10 ft. only. 26 gauge. 10 pieces per bundle. Weighs 180 
lbs. per 1000 lin. ft. 








Gold Bond Cornerite 



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Gold Bond Picture Mould 



Gold Bond Cornerite 

Use — Gold Bond Cornerite is diamond mesh lath cut into strips and bent to 
a right angle. Used in interior corners of walls and ceilings over wood lath, 
gypsum lath, etc. Standard in painted steel. May be had in copper bearing 
or galvanized steel. 

Sizes— 2, 3, 4, 6 or 12 in. wide by 96 in. long. Packed 63 pieces per bun- 
dle (504 lin. ft.) .... 3x96 in, Cornerite weighs 125 lbs. per 1000 lin. ft. 



Gold Bond Picture Mould 

Gold Bond Picture Mould is a metal concealed picture moulding. It is erected 
before walls are plastered and is absolutely invisible when wall is finished. 

Stock Length— 10 ft. only. 26 gauge. 10 pieces per bundle. Weighs 230 
lbs. per 1000 lin. ft. 



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GOLD BOND "HOLLOW WALL" SYSTEM 

A Simplified System of Steel Stud "Hollow Wall" Construction 

Installed Quicker with Substantial Savings in Cost. Extremely Sturdy Walls with 

High Insulation Value That Effectively Check Room-to-Room Noise 

For the first time- — a steel stud that stands on its own feet, eliminating floor track! This exclusive 
feature of the new Gold Bond "Hollow Wall" System simplifies and cuts the cost of fireproof, 
non-bearing partitions for apartments, hotels, office buildings, hospitals, etc. 

No Floor Track Needed . . . Saves 50% on Track 

Since you use track on the ceiling only— none on the floor except where unusual conditions 
demand it — you save 50% of the usual track footage. The base of the stud is anchored with rawl 
drives or concrete stub nails ... a quick and easy operation, particularly if you're working on wood 
or smooth concrete flooring. Three units build the framework, ready for lath and plaster, (l) The 
Gold Bond Steel Stud with special floor brackets. (2) The speedy 
new Gold Bond "Turn-Clip" Fastener that saves time in anchoring 
the stud to the ceiling track. (3) Gold Bond Ceiling Track, same 
design as the stud. 

Six Major Features 

One-Hour Fire Rating — The Gold Bond "Hollow Wall" provides 
one-hour fireproof protection- — or more — depending on the thickness 
of plaster specified. Meets building code requirements for hotels, 
schools, office buildings and similar structures. 

Light Weight — Complete with lath and plaster the "Hollow Wall" 
weighs only 18 to 20 lbs. per square foot, permitting lighter floor 
construction than would be needed to support masonry partitions. 

Crack Resistance — Since no part of the "Hollow Wall" is affected 
by dampness, there's no swelling or warping to cause plaster cracks. 
Gold Bond Metal Lath, moreover, gives the plaster extra resistance 
to vibrations and impacts. 

Sound Insulation — Gold Bond "Hollow Walls" stop noise trans- 
mission more effectively than either wood or masonry partitions of 
equal thickness. 

Walls Up To 7U In. Thick— As shown below, Gold Bond "Hol- 
low Walls" range from 3 J /2 m - to ^Vi m - thick, affording ample space 
for pipes, conduits, wire, ducts, vent pipes, etc. 




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Scud Wt., 


Finished Wall 


Stud Size 


Mft. 


Thickness 


2" 


321 lb. 


W 


3" 


331 lb. 


4M* 


i'A" 


341 lb. 


4X* 


4" 


356 lb. 


5M* 


6" 


391 lb. 


VA" 




All stud sizes furnished in lengths up to 12 ft. 



NEW "TURN CLIP" 

CEILING TRACK 

FASTENER 

It takes but a second to slip 
this new ceiling track fastener 
in place. "Fingers" on the 
cross bar at the top firmly grip 
the ceiling track. 



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Economy — Gold Bond "Hollow Walls" compare favorably with the cost of masonry partitions 
. . . It's easier for the electrical and plumbing trades to install their equipment . . . No patching 
extras necessary . . . Handling and trucking cost is reduced . . . And practically no clean-up expense. 




Top view of the Gold Bond "Hollow Wall" System. The same style unit is used for the studs 
and the ceiling track. Next, the "Turn Clip" is snapped into place and securely bound to the 

studs with tie-wire. 



22 



CONSTRUCTION DETAILS, GOLD BOND "HOLLOW WALL" SYSTEM 



CEILING R.UNNER. 

Z- fe*« V ANGLE/- I6&AGE 
CftO// MEMBERS- '/,'■ I6GAGE, 
SPACED &* O.C. 

CHANNEL JHOE 
LOCKS SECURELV 
INTO CEILING RUNNER, 
WITH A go* TUR.N 




;#=-VER.TlCAL STUD 

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CEILING RUNNER 



CRO// MEMBER FUR.RJNG 



GOLD &OND 
DIAMOND ML5H 
LATH &PLA/TER. 




GOLD BOND 
DIAMOND ME/H 
IATH 



CEILING RUNNER. 



INSTALLATION OF GOLD bOND STUDDING 
WITH JL/JPENDED CEILING 



jfei / 1 FLOOR. LlHE- 



FLOOR, ar CEILING bETAlL 
OF /FEEL J7UD PARTITION 



CR.O// MEM6ERJ 
'Jl'* 16 GA&fc 
SPACED 6*OC. 
SPOT-WELDED 
TO ANGLE/ 



FLOOR. CLIP LOCKS JECUREL/ 
INTO RUNNER. WITH A 90° THRU 



/FLOOR. CLIP AN INTEGRAL PART OF /TUDDIN& 
/AND CAN t>E USED WITHOUT R.UNNE-R. IF DE/IRED 

,WHEN USED WITH RUNNER., FL00R.CLIP MAY &E. 
SECURELY LOCK.E.D INTO RUNNER. WITH A 90° TURN 



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P ':-' 'FLOOR RUNNER' ANCHORED TO 
CONCRETE FLOOR. WITH RAWL DR.IVE" 

TfPICAL OF ANCHORING FLOOR. OR CEILING RUNNER. TO CONCRETE 

HOLE/ FOR. RAWL DRIVE/ DRILLED ON CENTER LINE OF PARTITION 

/PACED 24" ON CENTER/ 



Free. An illustrated folder on the Gold Bond "Hollow Wall" System with construction details in larger size than the above 
will gladly be mailed upon request to any of our offices. 



Specifications for the Gold 
Scope of Work 

Where hollow steel stud partitions are indicated on the plans or 
written in specifications, the Gold Bond Hollow Stud System shall 

be used. 

Materials 

1. Gold Bond Steel Stud, Ceiling Track and "Turn Clip" 
Fastener. 

2. Gold Bond Vs _m - F iat R'b Lath consisting of stiffening ribs 
iy 2 ins. on center with three rows of herringbone meshes between 
ribs, and coated with black asphaltum paint. 

3. Gold Bond No. 18 ga. soft annealed Galvanized Tie Wire. 

4. Gold Bond 3-in. Cornerite coated with black asphaltum 
paint. 

5. Gold Bond Corner Beads, Picture Moulding and Base 
Screed. 

6. Rawl Drives or Concrete Stub Nails. 

7. Gold Bond Base Coat Plaster. Gold Bond Super White 
Gauging Plaster and Gold Bond Finish Lime. 



Bond "Hollow Wall" System 
Application 

1. Track and floor clip shall be secured to ceiling and floor in 
a manner approved by the architect. Steel stud shall be placed 
between legs of "Turn Clip" fastener. Two strands of No. 18 
galvanized wire shall be passed around legs of clip and stud, and 
tied securely. 

2. Studs shall be spaced not to exceed 19Vz ins - on centers. 
If spacings wider than I9V2 ins - are desired, but not to exceed 
3iy 2 in s-, 3.4 lb. Gold Bond 3/ 8 -j n . Rib Lath shall be used. 

3. Metal Lath shall be erected with the long dimension of the 
sheet across the supports. Metal Lath shall be lapped at sides 
not less than y 2 in., and at ends not less than 1 in. Sheets shall 
be wire tied to studs with No. 18 galvanized wire at intervals not 
to exceed 6 ins. 

4. All internal angles shall be lined with 3-in. Cornerite and 
securely tied along edge. 

5. Galvanized Corner Beads, Picture Moulding and Base Screeds, 
wherever indicated, shall be wired to the partition after the lath 
is applied. 

Plastering 

Follow standard specifications for plastering over Metal Lath 
as outlined in the Gold Bond Handbook — 1940 issue. 



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GOLD BOND 2 SOLID PARTITION SYSTEM 

A Simplified System of Fireproof, Non-Bearing Partitions for Housing Developments, 

Offices, Hotels, Apartments and Hospitals . . . Sturdy, Permanent Walls That Really 

Conserve Space, Resist Cracks, Reduce Room-to-Room Noise 

Important features of the Gold Bond 2-in. Solid Partition System that 
have earned the instant approval of architects and contractors are first, the 
simple but very sturdy construction; second, low cost; third, quick installa- 
tion. Here is a truly economical system that has proven its practicability 
lime and again on large housing projects. Is strongly recommended for fire- 
proof, non-bearing partitions in hotels, apartments, hospitals, office buildings 
and housing developments. 

Only Three Units Required 

As illustrated below, only three units are used in this simplified system — 
the ceiling runner, floor runner and the steel studs which are standard %-in. 
cold rolled channels. For the plaster base, Gold Bond Y^-in. Flat Rib Lath 
is recommended. This product, specially designed for use with this system, 
provides greater rigidity and permits the metal studs to be spaced 20 in. 
apart. 

Economy of Space 

The chief feature of the Gold Bond 2-in. Solid Partition is, of course, its 
ability to conserve space. Compared with ordinary wood stud and lath parti- 
tions, it saves from 2 to 3 ins, per wall — a tremendous overall saving on any 
large building such as a hotel or apartment. Conservative figures show this 
saving to be as much as 7%, or to put it another way, it means an increase 
of 7% in rentable floor space. 

Other Advantages 

Fire Protection — Official tests have been made subjecting this system to heat 
and flame for a 4-hr. period without failure — the temperature reaching a high 
of 2000 degrees. 

Sound Insulation — Superior to hollow 4-5 in. wood stud walls of the same 
weight in reducing sound transmission. Noise reduction factor of 39 decibels. 

Crack Resistance — This monolithic unit of solid steel and gypsum, securely 
anchored to floor and ceiling, offers stubborn resistance to tension, shear, im- 
pact and vibration. 

Light Weight — Gold Bond 2-in. Solid Partitions weigh only I8V2 iDS - P er 
square foot as compared with 28 lbs. for 3-in. clay tile and plaster. 

Free — Upon request, National Gypsum Company will gladly mail an illus- 
trated book, "The Gold Bond 2" Solid Partition System," describing this sys- 
tem in detail with charts and complete architectural drawings. 




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These three units comprise the simplified Gold Bond 2" Solid Partition System. At top, the "Z" ceiling run- 
ner; center, the %-in. steel stud (standard Gold Bond Cold Rolled Channel); bottom, improved channel- 
shaped floor runner. 



24 



THE MOST EASILY INSTALLED SOLID PARTITION SYSTEM EVER DEVISED 




> 



(1) Gold Bond "Z" ceiling runners are attached with concrete stub nails or rawl drives. The steel studs are inserted through 
the perforations and incidentally, variations up to 2}£ ins. in ceiling height can be automatically taken care of without cutting. 

(2) Gold Bond floor runners are fastened every 12 ins. with concrete stub nails or rawl drives. Channels fit securely into slots 
without the necessity of tying. (3) Gold Bond /8-in. Flat Rib Lath is fastened to the studs with wire providing a rigid, all-metal 
base for the succeeding coats of Gold Bond Plaster. 

Specifications for the Gold Bond 2-Inch Solid Partition System 



(ft 



Scope of Work 



Where 2-in. solid partitions are indicated on plans or written 
in specifications, the Gold Bond Solid Partition System shall be 
used. 

Materials 

1. Gold Bond "Z" Ceiling Runner made from 20 gauge steel. 
Painted one coat asphaltum paint. 

2. Gold Bond %-in. Cold Rolled Channel Studs 16 gauge. 
Painted one coat asphaltum paint. 

3. Gold Bond Floor Runner. Slotted every 2 ins. with a per- 
forated flat surface every foot for securing to floor. 

4. Gold Bond Vs- in - Fhit Rib Lath consisting of stiffening ribs 
iy 2 ins. on center with three rows of herringbone meshes between 
ribs, and coated with asphaltum paint. 

5. Gold Bond 3-in. Cornerite. 

6. Gold Bond No. 18 gauge, Galvanized Tie Wire. 

7. Rawl Drives or Concrete Stub Nails. 

8. Gold Bond Corner Beads, Picture Moulding and Base Screed. 

9. Gold Bond Base Coat Plaster; Gold Bond Gauging Plaster 
and Gold Bond Finish Lime. 



3. Channel Studs shall be spaced not to exceed 20 ins. on cen- 
ter. If wider spacings are desired up to 31V2 his., use Gold Bond 
%-in. Rib Lath. Complete spacing data given in table below: 



Type of Lath 


Weights, Lbs. 
per Sq. Yd. 


Spacing of 
Supports 




2.2 
2,5 
3.0 
3.4 


12 in. 




16 in. 
16 in. 
16 in. 


Gold Bond Flat Rib Lath 


2.75 
3 
3-1 
4.0 


16 in. 




20 in. 
20 in, 
24 in. 


Gold Bond ?i-in. Rib Lath 


3.0 
3.4 
4.0 


24 in. 




31K '«. 
3lM in. 



Application 



1. The Gold Bond "Z" Ceiling Runner and Floor Runner shall 
be securely fastened to ceiling and floor with ^-in. concrete stub 
nails or rawl drives in a manner approved by the architect. 

2. Channel Studs shall be inserted through holes provided in 
"Z" Ceiling Runner, then dropped into slots in floor runner. When 
Metal Lath is being applied at ceiling, channel shall be tied 
through perforations provided in ceiling runner. 



4. Gold Bond %-in. Flat Rib Lath Painted, shall be applied to 
only one side of channel stud with the long dimension of the sheet 
across the supports. Sheets shall be lapped at sides by nesting out- 
side ribs. Ends shall be lapped 1 in. Lath shall be wire tied to 
studs with No. 18 gauge galvanized tie wire at intervals not to 
exceed 6 ins. 

5. All internal angles shall be lined with 3-in. Cornerite 
securely tied along edge. 

6. Galvanized Corner Beads, Picture Mouldings, and Base 
Screeds, wherever indicated, shall be wired to the partition after 
lath is applied. 



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Plastering 



Follow specifications for plastering over Metal Lath as outlined 
in the Gold Bond Handbook — 1940 edition. 



25 



GOLD BOND METAL LATH PRODUCTS 



Gold Bond Cold Rolled Channels 



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Are used generally for suspended ceiling work and 2 in, solid 
partitions. They are formed cold from the best quality strip 
steel. Gold Bond Channels are absolutely straight and are espe- 
cially adaptable to form work because of their bending qualities 
and rigidity. 



Type 


Stock lengths 


Packed 


Weight, Lbs. 


shown in feet 


Pes. per bdle. 


1000 lin. ft. 


Pencil 


12, 14 


20 


113 


Box 


16, 18, 20 


20 


276 


Y A in. 


16, 18, 20 


20 


276 


1 in. 


16, 18, 20 


20 


332 


l^in- 


16, 18, 20 


10 


442 


2 in. 


16, 18, 20 


10 


553 



Furnished unpainted unless otherwise specified, 
nel always furnished in painted stock. 



Pencil Chan- 



Gold Bond Metal Arches 



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Are made from galvannealed sheet steel. A perfect arch for 
approximately half the cost of curved wood forms to which 
must be fitted corner bead and metal lath. They are easy to erect 
and are ideal for residences and apartment houses. Gold Bond 
Metal Arches are made in true circle, gothic and elliptic designs. 
They are standard for 2x4 studs or bucks. The studs or bucks 
are to be spaced iy 2 in. wider than the desired finished opening. 

This allowance is for the thickness of the lath and plaster 
ground. Can be jointed with standard corner bead by using the 
shank of a No. 7 box nail. 

Styles and Erection Details 



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Style 


Spacing 


Width of 


of 


of Studs 


Finished 


Arch 


or Bucks 


Opening 


No. 11 


2VA" 


20" 


No. 22 


33" 


31K" 


No. 33 


33" 


31K" 


No. 36 


39" 


373^" 


No. 44 


51" 


49K" 


No. 55 


63" 


e\y 2 " 


No. 66 


72" 


1&A" 




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Gold Bond Metal Arches are easily fitted over the 
lath. Saves time and insures perfectly formed arches 




Won't Kink or Break 



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Easily Prepared for Bending 



Gold Bond Arch Corner Bead 

A new product, Gold Bond Arch 
Corner Bead has met with instant 
acceptance among builders and deal- 
ers. Serves a double purpose — as a 
corner bead for vertical or horizontal 
corners — as an arch bead for curved 
openings. Arches can be quickly made 
on the job at a decided saving. 

Ordinary corner beads invariably 
break or kink at the nose when bent. 
Not so with Gold Bond Arch Cor- 
ner Bead because its unique design 
permits utmost flexibility. No me- 
chanical bender is necessary. Simply 
snip one flange as illustrated at the 
left and bend to the desired radius. 
Fits over any style of lath. The 
flanges have twice as many perfora- 
tions as most corner beads which 
means more plaster "keys" and 
greater bonding strength. 

Supplied in lengths of 6, 7, 8, 9, 
10 and 12 ft. Made in 26 gauge. 
24 gauge on special order. Packed 
10 pieces per bundle. Weighs 200 
lbs. per 1000 lineal ft. 




For Ornamental Plaster Work 



26 



GOLD BOND "CLIP-ON" SYSTEMS 
For Suspended Ceilings and 2-inch Solid Partitions 

Two Patented Systems Which Combine the Use of Gold Bond 

Gypsum Lath and Metal Installation Clips . . . Quicker, Stronger, 

Cuts "Dead-Load" Weight One-Third . . . One Hour Fire Rating 



SUSPENDED CEILINGS 



The important problem of keeping 
cracks out of suspended plaster 
ceilings has been approached in the 
most scientific and practical way in 
the development of the Gold Bond 
"Clip-On" System. 

This method comprises the use of 
fireproof Gold Bond Gypsum Lath, 
galvanized copper bearing clips and 
standard coated channels. The chan- 
nel grillage is so constructed as to 
permit expansion or contraction with- 
out transferring any of the resulting 
movement to the gypsum lath, there- 
by eliminating the most common 
cause for plaster cracks. 



Stronger and Lighter 



In accomplishing this freedom for 
expansion or contraction there is no 
sacrifice of strength or other desir- 
able qualities of good ceiling con- 
struction. The Gold Bond "Clip- 
On" System builds the strongest ceiling of any known method. 
This outstanding strength is provided despite the fact that 
the weight of the ceiling is 20 to 30% less than usual. The 
"Clip-On" System weighs 45 to 50 pounds per square yard in 
contrast to the normal weight of 70 to 80 pounds. 

One-Hour Fire Rating 

The Gold Bond "Clip-On" Suspended Ceiling when plas- 
tered according to specifications, fully meets the standard one- 
hour fire test imposed by the fire underwriters. 




The panels of Fireproof Gold Bond Gypsum Lath 
slide into the metal clips and the job moves along 
like clock-work. Lathers get the "hang" of it quickly. 



The sturdy panels of Gold Bond 
System Lath, 16x48 inches, are 
easily clipped into place and provide 
a smooth, even base for plaster. Ac- 
tual figures show that the plasterer 
will apply greater yardage per day 
than over any other type of plaster 
base. 

Complete Gold Bond 
"Clip-On" Ceiling 

The Gold Bond "Clip-On" System 
is designed and sold for use with 
Gold Bond Gypsum Lath, plastered 
with Gold Bond Gypsum Plaster and 
finished with Gold Bond Finish 
Lime. In specifying the system with 
Gold Bond Products throughout, the 
architect or engineer is protected by 
one undivided manufacturing re- 
sponsibility. 

Descriptive Book on 
Request 

National Gypsum Company will 
gladly send without charge, an illus- 
trated book "Gold Bond 'Clip-On' 
System for Suspended Ceilings." 



| (left) Toggles are used on 
ceiling areas over 12 ft. 
square. 

(below) Plasterers can work 
faster over this smooth base. 



Speedy Installation 



Contractors find the "Clip-On" System easy to master and 
a real time-saver. One distinct saving — -furring channels are 
spaced at 16-inch intervals instead of the customary 12-inch. 
This alone represents a saving of 25% in channels and erec- 
tion labor. 






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CLIP-ON" SYSTEMS (Continued) 



2 INCH SOLID PARTITIONS 



The Gold Bond "Clip-On" 2-Inch Solid Partition provides 
I a thin but very sturdy construction adaptable to hotels, apart- 
ment houses, office buildings, and especially to low-cost housing 
developments. Saves a full 2 l / 2 inches in width or length of a 
room as compared with conventional wood stud partitions, plas- 
tered on both sides. It also speeds up completion of the job at 
a decided saving in labor and material. 

This system comprises the use of Gold Bond Perforated Gyp- 
sum Lath, galvanized copper bearings clips, and standard coated 
channels. Erection is rapid. Channels are spaced 24 inches on 
centers (or 16 inches) ; the gypsum lath panels 16 x 48 inches 
dropped into place and one sharp blow anchors the lath clips to 
channels. The job is then ready for plastering. As shown by the 
following chart, a saving of two days' time per room is effected. 



Day 


2-In. "Clip-On" System 


Other 2-In. Systems 


First 


Lather erects channel studding and 
"clips-on" Gold Bond Gypsum Lath. 


Lather erects channel 
studding and plaster 
base. 


Second 


Plasterer "backs up" channel stud- 
dine area with scratch coat and also 
applies brown coat to gypsum lath 
side, and double backs with brown 
coat on channel side. 


Scratch coat applied 
to metal plaster base. 
(This operation is en- 
tirely eliminated with 
the "Clip-On" Sys- 
tem.) 


Third 


Finish coats, both sides. 


Backs up channel side 
with fill coat. 


Fourth 




Brown coat on both 
sides. 


Fifth 




Finish coat on both 
sides. 



One-Hour Fire Rating 



The Gold Bond "Clip-On" Partition fully meets the require- 
ments for a one-hour fire test rating. Not only is it a highly 
incombustible wall, but it provides real protection against spread 
of fire. As there is no wood studding, high temperatures cannot 
start combustion within the wall itself. 





Plasterer (at left) filling in the channel side with the scratch 
coat. Lather (at right) builds up the partition quickly. 

Other Advantages 

The "Clip-On" System builds a 2 inch solid partition of ex- 
treme strength, yet remarkably light for a plaster partition. Enjoys 
the highest comparable rating on impact tests as conducted by the 
Bureau of Standards. Resiliency provided by metal clips prac- 
tically eliminates danger of plaster cracks occurring from vibra- 
tions or structural strain. 

Descriptive Book Available 

Upon request National Gypsum Company will gladly send a 
large illustrated book . . . "Gold Bond 'Clip-On' System for 
2 Inch Solid Partition Wall." 



(left) Applying the 
"brown" coat to the 
face side. Plastering 
moves along fast over 
the Gold Bond Per- 
forated Gypsum Lath. 



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£2 

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t=3 
£3 
£3 
t=3 

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(above) One sharp 
blow clinches clip 
No. 101 to channel. 



(left) The edges of 
the lath panels 
don't have to "hit" 
on channels. 



28 



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GOLD BOND GYPSUM PARTITION TILE 

True, Uniform, Machine Moulded Tiles 

That Are Fireproof, Insulative, Lightweight 

and Easily Handled 

#*OLD BOND GYPSUM PARTITION TILE is a lightweight, 
*" sturdy product, used for the finest type of fireproof par- 
titions. 

Supplied in all standard thicknesses that permit economical 
erection with a minimum of waste. It is recognized as the stand- 
ard material for interior, non-bearing partitions, column covering, 
and wall furring. Is particularly adapted to cutting or sawing 
ancl'chasing for conduits, switch boxes and pipe lines. 

Gold Bond Partition Tile is made under the most modern 
methods with the latest type of machinery, in standard uniform 
sizes 12 in. x 30 in., thickness 2 in. solid and 3, 4, 5 and 6 in. 
hollow. iy 2 in. and 2 in. hollow furring tile should be made 
on the job by ripping 3 in. and 4 in. hollow tile through the 
center, as this method effects a distinct saving. One of the Partition Tile Machines at the Fort Dodge Plant 




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TABLE OF SIZES AND WEIGHTS 






Size of Gold Bond 
Gypsum Partition Tile 


For Ceiling 

Heights 

Up to 


Weight of 

Tile 

Lbs. per sq. ft. 


Weight of 

Mortar 

Lbs. per sq. ft. 


Weight of 

Plaster (one side) 

Lbs. per sq. ft. 


Total Weight 

Tile, Mortar and 

Plaster (two sides) 

Lbs. per sq. ft. 


2" Solid 12"x30" 

3" Hollow 12"x30" 

4" Hollow .12"x30" 

5" Hollow 12"x30" 

6" Hollow 12"x30" 


10 ft. 
13 ft. 
17 ft. 
20 ft. 
30 ft. 


10.0 
10.0 
14.0 

17.2 
20.0 


1.00 
1.20 
1.63 
2.04 
2.45 


3 
3 
3 
3 
3 


17.00 
17.20 
21.63 
25.24 
28.45 






SHORT SPAN REINFORCED GYPSUM 

ROOF TILE 



Short span gypsum roof tile construction is by far the most 
flexible of any precast system. Gold Bond Roof Tile is accurately 
machine moulded and reinforced with electrical welded galvanized 
steel fabric. May be used on any type of factory or industrial 
building, power plants, schools and is particularly adapted to 
special pitched roofs that are cut up with hips, valleys or dormers. 

Gold Bond Short Span Roof Tile requires sub-purlin supports, 
These are usually standard T sections but lightweight I-beams 
or channel sections may be used with economy up to 12 ft. They 
are made 3 in. solid, 12 in. wide and 30 in. long, extra dense 
and reinforced with electrically welded galvanized steel fabric 
placed near the bottom. The most economical span for standard 
3 and 3}4 hi. T's is from 6 ft. 7 in. to 7 ft. 4 in. 

The tile is laid directly on steel supports without mortar and 
with the sides tight together, having full bearing on the sub- 
purlins. The grouting grooves are then filled with gypsum mor- 
tar and the roof is then ready for covering. 



On sloping roofs, if channels are used for main purlins, they 
should open upwards in order to permit proper clipping of the 
sub-purlins. 

Tie-rods are recommended for use on all roofs, using channel 
purlins regardless of slope or pitch. 

Curb tile is used under sash, skylight frames, etc., and are 
made 3 in. x 15 in. x 30 in. The steel work should be laid out 
to accommodate a full or one-half 30-in. dimension. 

Gold Bond Short Span Reinforced Roof Tile weighs approxi- 
mately 17 lbs. per square foot. Is made of extra dense gypsum 
and because of the method of reinforcing is easily cut to fit job 
conditions. 

The 3-in. solid roof tile has a high heat insulation value 
according to tests by recognized authorities of .41 B.t.u.'s per 
square foot per degree difference in temperature per hour. This 
excellent insulating property prevents the usual condensation 
which occurs on the under side of non-insulative constructions. 



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MONOLITHIC GYPSUM CONSTRUCTION 
FOR POURED-IN-PLACE FLOORS AND ROOFS 

This Type of Construction, in Use for Almost a Half Century, Has Been Further 

Improved by a Patented Method Which Makes This System Preferable from Every 

Standpoint . . . Quickly Constructed, Permanent, Fireproof, Inexpensive 




Poured-in-PIace Gypsum Roof Construction Which Actually Becomes an Integral Part of the Main Steel Construction 

Withstands vibrations and will resist storms and cyclones sufficient in force to destroy roofs of conventional design 



SIX OUTSTANDING ADVANTAGES 



Light Weight — Slab weighs only one-third as much as con- 
crete, thus reducing the dead load and decreasing the cost of 
supports and foundations. 

Rapid Construction— Slab may be used within an hour, and 
the roof covering can be placed if desired the following day. 

High Insulation Value — Four times the insulation value of 
concrete. Reduces fuel consumption and heating equipment 
requirements. A building that is warmer in winter and cooler 
in summer. 
Fireproof- — Gypsum construction as fireproofing for steel has 



successfully passed numerous fire tests, and is generally recog- 
nized as being equal to other material as fireproofing for steel 
work, with a minimum of dead load. 

5. Vibration Crack Resistant — Owing to the toughness and elas- 
ticity of the gypsum composition there is a noticeable absence 
of vibration cracks on all installations of this material. 

6. Low Maintenance Cost— Repairing and maintenance cost is 
low. Slab is easily cut where changes in construction 
are necessary. Nails can be driven in slab to secure slate, 
tile, etc. 



Monolithic Gypsum construction for floors and roofs (gypsum 
U, fibre concrete with steel reinforcing) has long been favored for 

its permanence and economy. 

The natural advantages of this construction have been further 
^ enhanced by a patented method which permits of more rapid 

installation and incidentally may be designed for any required 
m~ loading condition. 



The roof construction design, absolutely perfect from an en- 
gineering standpoint, permits the roof to become an integral part 
of the main steel construction — the undersurface providing an 
attractive ceiling that requires no decoration. 

Speed of erection, permanence, effective insulation and fire- 
proofing, plus low initial cost combine to make this system out- 
standing. For further details, please write National Gypsum 
Company, Buffalo, N. Y. 



30 




SECTION TWO 



GOLD BOND 

GYPSUM PLASTERS 
LIME AND PAINT 



Pages 32-39 
GYPSUM PLASTERS 

Page 40 
KEENE'S CEMENT 

Page 41 
FINISH and MASON'S LIME 

Pages 42-43 
COLOR TEXTURE 

Pages 44-45 
CASEIN PASTE PAINT 

DEEP COLORS 

PIGMENTED PRIMER 

LIME PROOF MORTAR COLORS 

SPACKLING COMPOUND 

Page 46 
CALCIMINE 

Pages 47-53 
SPECIFICATIONS . . . LATH and PLASTER 

Pages 88-89, Section live 
MACOUSTIC ACOUSTICAL PLASTER 



At Left: 

Mechanically controlled mixing and 
bagging equipment assure accurate 
blending and weighing of plaster with- 
out possibility of human error. 



> GOLD BOND— A COMPLETE PLASTER SERVICE 



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How Gold Bond Supervises the Quality of Its Plaster Every Step of the Way 

From Mine to Finished Wall 



GOLD Bond Plaster mines and quarries are located in the 
richest gypsum sections of the country, the vast deposits 
insuring approximately a hundred years' supply of exceptionally 
pure rock. 



Purity Assured 



Here in these mines and quarries daily tests are made to assure 
the constant purity of the rock — actual tests proving that the 
purity of the gypsum has a decided effect upon the strength 
and hardness of the finished wall. High purity also increases 
the coverage and smooth working qualities of the finished 
plaster. 

Gold Bond spares no trouble or expense to obtain the purest 
gypsum rock, and then follows it by laboratory tests through 
every process of manufacture to the finished job. 



Tested for Individual Job 

For this purpose — suiting the plaster to the individual job — 
the Gold Bond laboratories are constantly testing specimens of 
sand from every part of the country where Gold Bond plaster 
is used. Samples are continually being secured to meet changes 
in local conditions. 

Before shipping, every batch of plaster is tested to meet the 
requirements of the particular sand of the vicinity into which 
the plaster is to be shipped. A somewhat costly process from 
the viewpoint of the manufacturer, but well worth the expense 
as it assures our customers of getting plaster that is particularly 
suited to their respective territories regardless of any unusual 
local conditions. New processes (patent applied for) insures 
uniformity of performance under all normal job variations and 
weather conditions. 



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Introduction of the new Gold Bond Microplastic Plaster in 1935 
proves one of the greatest improvements in plaster history .... 



Gold Bond Plasters have long been accepted as "standard" 
among the leading contractors of the country. Then in 1935, 
this enviable position was greatly enhanced by the introduction 
of a brand new plaster — Gold Bond Microplastic Plaster, pro- 
duced after years of intensive research work. 

This improved method of processing has resulted in a product 
that is practically foolproof as far as application is concerned. 
Plasticity or workability has been increased 100% with far 
greater coverage. The new Gold Bond Microplastic Plaster met 
with instant approval and experts considered this to be the 
greatest forward step in the development of plaster in many 
years. 



What the Micron-Sizing Process 
Actually Accomplishes 



*vSW 








2^ 



'mz&m? 



After 



Note the contrast between these microphotos. At the left the plaster 
is coarse and flinty, while at the right the plaster after the Micron-Sizing 
Process has been broken down into millions of tiny particles and then 
rolled into soft, felted balls. 




New Equipment and New Processes Enable Gold Bond to 
Offer a New High Quality in Plaster 

Two of the huge revolving mills which regrind the gypsum particles 
into micron sizes and roll them into soft felted balls. 

Bottom: An X-ray drawing of interior of mill showing the 100,000 
manganese steel balls which do the pulverizing. 

Scientific Principle of Micron Sizes and Their 
Effect on Plasticity 

It is a well established scientific principle that in the setting 
of plaster a gelatinous plastic film is produced on the surface 
of the particles of calcined gypsum. Gold Bond, as one step in 
manufacture, regrinds the particles to micron sizes (1/25,000 
inch). The enormous increase in area resulting greatly multiplies 
the bulky gelatinous smooth working qualities. 



32 



GENERAL DATA 



Characteristics and Application of 
Gold Bond Gypsum Plasters 



> 
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The high grade gypsum rock used in the manufacture of all 
Gold Bond Plasters is hydrated calcium sulphate, containing 
approximately 20% of chemically combined water. In the cal- 
cination process most of this water is driven off, producing 
"plaster of Paris" which is the base of all gypsum plasters. 
On remixing with water on the job, the material takes back 
the water driven off in calcination and crystallizes or sets to 
the original gypsum rock. 

In making Gold Bond Gypsum Plasters, small amounts of 
other materials are added to the basic "plaster of Paris" to con- 
trol the time of set, working qualities, type of use, and par- 
ticular market conditions of territory to which it is shipped. 

May Be Used on All Plastering Bases 

One of the many advantages of gypsum plaster is that it may 
be used on all types of plastering bases in addition to masonry 
surfaces. It may be used on gypsum, wood or metal lath; clay, 
concrete or gypsum tile or blocks; brick, concrete or other 
standard masonry plastering surface. 

Adhesion Qualities 

The particularly strong adhesive quality of gypsum plaster 
has been practically demonstrated in tests at the U. S. Bureau of 
Standards. It was conclusively shown that it does not depend 
entirely on mechanical keys but bonds on actual suction or 
adhesive qualities. 



Dries Quickly 

The advantages of the quick set and rapid drying qualities of 
gypsum plaster are very important in the completion of a 
building as well as reducing overhead. The usual time for a 
hard set is from 2 to 6 hours and complete drying in about 36 
hours depending on weather and the season of the year. After 
drying there is no further sweating or dampness. 

Durability 

Gypsum plaster forms a hard, tough base for the application 
of finish coats or decoration. The tough base coats help the 
plaster wall to withstand rough usage which it may receive 
during the life of the building. 

Low Coefficient of Expansion 

After being applied, gypsum plaster remains inert and does 
not expand or contract even when subjected to fire. As it is 
made of gypsum it is absolutely incombustible. 

Packaging 

Shipped usually in 100 lb. paper bags; and some specialty 
products in 250 lb. barrels. 



At Left: 

Gypsum Mine at 
Clarence Center, N. Y. 



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At Right: 

Gypsum Quarry at 
National City, Mich. 



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33 



GLOSSARY OF TERMS AND INFORMATION 
REGARDING PLASTERS AND THEIR USES 



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In view of the use of numerous local or descriptive names for the same type 
of plaster and widely varying market practices, it is felt that the following 
classification of plasters as to names and uses will be of considerable value: 



BASE COAT PLASTERS 



Cement Plasters 



These plasters constitute the bulk of tonnage of all types of 
gypsum plasters used. The term relates to all Neat (the term 
Neat designating a plaster containing no sand or other aggregate 
added at mill) plasters either with or without hair or sisal fiber. 
(Wood Fiber Plaster is never classified as a cement plaster.) 

Cement plaster is also called by the following names in many 
markets : 



(a) Hardwall 

(b) Patent Plaster 

(c) Neat 



(d) Compound 

(e) Paristone 

(f ) Base Coat Plaster 



Fibered and Unfibered Cement Plaster 

Hair Fibered Plaster — 

Hair Fibered Plaster may contain either hair or sisal fiber. 
Sisal fiber is recommended as being more satisfactory than hair 
in plaster. 

Unfibered Plaster — 

This designates only cement plaster containing no fiber. 

Uses for Cement Plaster — 

This material is generally used for plaster work where good 
plaster sand is easily available and it is economically advisable 
to mix sand on the job rather than use a mill-mixed material. 
Cement Plaster is formulated for use with sand in amounts 
covered in directions and should never be used Neat — i.e., with- 
out addition of sand. 

Sanded Plaster 

This material is the same as Cement Plaster, except that a 
properly graded sand has been added at the mill in the proper 
amount for best plastering results. It has been called by many 
names listed under Cement Plaster except with the term Sanded 
used in addition. 



Uses for Sanded Plaster — 

This material is used largely where good plastering sand is 
not easily available, where absolute exactness of proportioning 
of amount of sand is required, where facilities for mixing are 
limited, or job is not large enough to justify trouble of mixing 
sand on the job. Sanded plaster is used solely with addition of 
water on the job. 

Wood Fiber Plaster 

This type of plaster contains a finely shredded wood fiber and 
is made primarily for use with addition of water only on the 
job. In some cases, however, a small amount of sand (never 
over one part by weight) is added on the job. In some markets 
this material is known as Pulp plaster. 

Uses for Wood Fiber Plaster — 

This material is used to a large extent for patch jobs, for work 
where an extremely hard wall is wanted, where base plaster is 
to be trowel finished, where sand is not easily available, etc. 

Sanded Wood Fiber Plaster 

This type plaster is on same general order as Wood Fiber 
Plaster except a small amount of specially graded fine sand is 
added. Its uses are the same as with Wood Fiber Piaster and 
it is used in certain markets where trade prefers a sanded wood 
fiber. 

Concrete Bonding Plaster 

This is a specially formulated wood fiber plaster to provide 
maximum bond to interior concrete surfaces. Ordinary gypsum 
or lime plaster does not bond properly to concrete surfaces. 
Water only is added in mixing on the job. 

Bond Plaster 

This material is the same as Concrete Bonding Plaster. 



FINISH PLASTERS 



< 



Gauging Plaster 

This is a specially ground calcined gypsum which may be 
either pure white or grey in color and quick or slow in set. 
Other names used to designate this material are as follows: 

(a) Plaster of Paris 

(b) Calcine 

(c) Finish Plaster 

(d) White Plaster (For pure white material only) 

(e) Stucco 



Uses of Gauging Plaster — 

This material is always used in connection with lime putty 
finish and is the essential ingredient which provides an initial 
set and prevents the slow setting lime from shrinking, checking 
and peeling before the set of lime itself takes place. The fail- 
ure to use the proper amount of Gauging Plaster is the cause 
of most failures on lime putty finish jobs. 

The type of Gauging used depends on trade practices in each 
locality. The following types of material are used: 



34 



(1) White Gauging— Quick Set 

(2) White Gauging — Slow Set 

(3) Grey Gauging — Quick Set 

(4) Grey Gauging — Slow Set 

Moulding Plaster 

This is made from selected rock and specially prepared for 
requirements of its use. This is also sometimes called Plaster 
of Paris. It is used for plaster moulds, ornamental plaster work 
of all kinds and can be used as substitute for quick set Gauging 
Plaster. It is generally made as a pure white plaster but in a few 
localities Grey Moulding is used for special purposes. 

Prepared Trowel Finishes 

These plasters are gypsum finish plasters manufactured to 
avoid the problems involved in use of ordinary lime putty finish. 
They contain no lime but various ingredients are added to pro- 
duce exceptionally easy working and spreading qualities. Water 
only is added on the job. They are also known as 

(a) Smooth Trowel Finishes 

(b) Gypsum Trowel Finishes 

Uses of Prepared Trowel Finishes — 

These finishes are available as a substitute for lime putty finish 
whenever desired. They have replaced lime putty finish in some 
markets. They have the advantage of perfect bond to base, quick 



setting and freedom from danger of lime burn in decoration. 
These finishes can be safely decorated in any manner as soon 
as dry. 

They are available in both grey and white. 

Sand Float Finishes 

These are also prepared gypsum finish with addition of fine 
sand. For use over gypsum base coat. They are used in markets 
where the semi-rough surface of a sand float finish is desired. 
As name implies these materials are "floated," not trowel finished. 

They are furnished in both grey and white. 

Keene's Cement 

This is an exceptionally dense gypsum finish, fundamentally 
different from all other types of gypsum plasters. Made at Medi- 
cine Lodge, Kansas, by Best Brothers, the original and largest 
manufacturer of Keene's Cement in the country and now operated 
as a division of National Gypsum Company. 

Keene's Cement is made in several different styles with various 
setting times and with the grind ranging from coarse to super-fine 
as covered in detail on page 40. 

Uses of Keene's Cement — 

Keene's Cement is used wherever extremely dense walls are 
required, such as imitation tile finishes in bathrooms and kitchens 
or any place where the walls will be subjected to unusual abuse. 
Also used as a finish coat instead of lime putty, for castings and 
running moulds, backing up artificial marble, also for the facing 
of artificial marble and for numerous ornamental plastering 
effects. 



NATIONAL GYPSUM CO. GYPSUM PLASTERS 


APPROXIMATE YARD COVERAGE PER TON ON VARIOUS PLASTERING BASES 


Type of 
plaster 


Gypsum 
lath 


Gypsum 

insulating 

lath 


Painted 
metal 
lath 


Wood 
lath 


Gypsum 
tile 


Brick and 
clay tile 


Concrete 
surfaces 


Bags type 
weight, lbs. 


Neat* 


225-240 
Sanded 1-2 


225-240 
Sanded 1-2 


105-135 
Sanded 1-2 


180-210 
Sanded 1-2 


235-255 
Sanded 1-3 


165-200 
Sanded 1-3 


Use Bond 
Plaster 


Paper 
100 lbs. 


Sand d 


75-80 


75-80 


35-45 


60-70 


65-70 


45-55 


Use Bond 
Plaster 


Paper 
100 lbs. 


Wood 
Fibered 


115-120 

Water only 

no sand 


115-120 

Water only 

no sand 


56-65 

Water only 
no sand 


90-100 

Water only 

no sand 






Use Bond 
Plaster 


Paper 
100 lbs. 






Bond 




90 to 120 sq. yds., depending on smoothness of surface of concrete 


Paper 
100 lbs. 


Gauging 
Plaster 




1600 sq. yds. with 2 tons of hydrated lime 


Paper 
100 lbs. 


Prepared 

Sand Float 

Finish 




250-275 sq. yds. 


Paper 
100 lbs. 


Prepared 
Trowel 
Finish 




300-400 sq. yds. 


Paper 
100 lbs. 


Keene's 
Cemem 




400-500 sq. yds. 


Paper 
100 lbs. 


♦Sanded 1-2 equals 1 part of plaster 2 parts sand by weight. 
Sanded 1-3 equals 1 part plaster 3 parts sand by weight. 



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35 



>■ PLASTER PROBLEMS AND THEIR SOLUTION 



Gypsum plasters are a highly sensitive chemical product 
and therefore subject to changes resulting from use under 
adverse conditions. A knowledge of the effect of these 



conditions on gypsum plasters as covered by the following 
table will insure the satisfactory correction of practically 
all plaster problems which arise: 



SLOW SET: If plaster fails to set in 4 hours with all proper precautions. 

REMEDIES: (1) Add amount Gold Bond Accelerator (usually handful to the bag is sufficient) necessary to give 
desired set. Sprinkle accelerator over dry plaster before mixing, 
or (2) i\dd handful screened dry set plaster droppings same manner as accelerator. 
or (3) Add alum or zinc sulphate in proportions two ounces per gallon water. 
(Portland cement is also a good accelerator.) 


QUICK SET: If plaster sets in box or before it can be darbied. 

REMEDIES: (1) Check to see if mixing box, tools and sand are clean and clean water used. 
(2) Use retarder or ground glue in amount needed for desired set. 


SHORT WORKING: If mortar works hard, does not carry sand, drops easily from wall. 
REMEDIES: (1) See if material is stored in dry place. 

(2) Add fresh plaster bag to bag. 

(3) Decrease amount sand and water. 


PLASTER TROUBLES AFTER APPLICATION 


IF PLASTERED 
WALL IS: 


THE TROUBLE IS: 


REMEDY: 


TO PREVENT TROUBLE 
IN FUTURE: 


Soft, white, chalky par- 
ticularly over openings. 
Hot weather condition. 


"Dry Out." Plaster dried 
before setting. 


Spray walls with clean 
water. Keep wet till set. 


Screen openings. Wet lath and floors. Avoid 
thin coats. If plaster slow set use accelerator. 


Damp. Soft. Winter 
condition. 


"Sweat Out." Plaster 
holds water and "rots." 


After plaster is set open 
doors and windows. 
Supply heat. 


Allow ventilation to hasten drying after plaster 
is set. Supply artificial heat in cold weather. 


Soft, resembling sweat 
out — rooms have been at 
freezing temperature. 


Walls are frozen. 


Throw open building. 
Let walls freeze dry. 


Keep walls from freezing until plaster is dry 
or at least 24 hours. 


Soft, not due slow set or 
hot weather or retemper- 
ing plaster. 


(1) Too much sand. 

(2) Too fine sand. 


None. 


( 1 ) Measure sand accurately. 

Do not use over 3 parts by weight. 

(2) Use other sand. 


Wood lath. Cracks or 
bulges horizontal with 
lath. 

Straight vertical cracks. 


Due swelling poor grade 

of lath or improperly 

spaced or failure to wet 

down. 

Failure stagger joints. 


Remove and replaster. 


Use No. 1 lath, white pine, cypress or spruce 
free from bark, sap, or knots. Space Vit" to %" 
apart. Stagger. Wet lath before plastering. 


Gypsum lath. Cracks 
around joints. 


Too thin coat. 


Apply second coat. 


Use proper grounds. 


Metal lath. Sags, cracks, 
does not adhere. 


Too light lath, too open 
spaces, plaster not dou- 
ble fibered. Plaster over 
sanded. 


Reapply. 


Correct conditions mentioned. 


Brick or tile. Small 
cracks. 


Failure wet before plas- 
tering. Too little sand. 
One coat work. 


Float crack or apply more 
plaster. 


( 1 ) Wet tile before plastering. 

(2) Use 3 parts sand. 

(3) Two coat work. 


Concrete. Poor bond. 


Use of improper plaster. 
Unprepared surface. 


Remove loose plaster. 
Condition wall. Apply 
bond plaster. 


Surface must be rough, clean. Use concrete 
bonding coat. 



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36 



*5S 



GOLD BOND BASE PLASTERS 

With Regard to A. S. T. M. Specifications 



National Gypsum Company guarantees any Gold Bond Gyp- 
sum Plaster product to have about double the strength require- 
ments and to exceed by a wide margin the purity required for 



any special plaster product in the A. S, T, M. Specifications and 
also every other detail of these specifications. This also applies 
to Federal specifications. 



> 

H 



GOLD BOND CEMENT PLASTER 

Neat Plaster for Base Coats — Fibered or Unfibered 



Gold Bond Cement Plaster is "neat," not sanded, the sand 
being added at the job. Each shipment is prepared especially 
for the locality to which it is shipped and for the sand used in 
that locality. Fibered with hair or sisal fiber as ordered. 

When mixed with sand it spreads well with a uniform work- 
ing quality and with satisfactory results on the finished wall. 
On account of the purity of the gypsum it assures the maximum 
in sand carrying capacity, bulk and workability. 

Note: Cement plaster should never be used neat — i. e., without adding 
sand. 

Mixing and Proportions of Sand for 
Various Bases 

After thoroughly mixing with sand, hoe plaster into water 
and bring to a uniform mix of proper consistency. 

Scratch Coat on Gypsum, Wood and Metal Lath 
Mix 1 part plaster with 2 parts by weight of dry sand. 

On Brick and Gypsum or Clay Tile 
Use 1 part plaster to 3 parts by weight of sand. 

Brown Coat (Second) for All Plaster Bases 

Mix 1 part of plaster to 3 parts of sand. 



Application on Various Bases 

On Gypsum Lath — Do not wet lath. Apply in 2 coats, 
scratching well in to fill joints between the lathing units. Brown 
coat to be darbied lightly and water used sparingly. 

On Wood Lath — Soak lath 24 hours before and wet again 
an hour or two before plastering. Apply in 2 coats using suf- 
ficient pressure on scratch coat to obtain good key. Brown coat 
to be darbied lightly and water used sparingly. 

On Metal Lath — Apply in 2 coats. Scratch coat to lightly 
cover lath and fill mesh. Scratch first coat and allow to set. 
Then apply brown coat, darby lightly and use water sparingly. 

On Brick and Gypsum or Clay Tile — Soak brick or clay 
tile walls and sprinkle gypsum tile lightly before application of 
plaster. Apply in 2 coats. Darby brown coat lightly and use 
water sparingly. 





Approximate Coveriri 


g Capacity 


and Sanding 


Plastering 
base 


Gypsum 
lach 


Wood 
lath 


Mcial 
lath 


Brick and 
clay tile 


Gypsum 
tile 


Sq. yds, 
per ton 


225-240 
1 plaster 
2 sand 


180-210 
1 plaster 
2 sand 


105-135 
1 plaster 
2 sand 


165-200 
1 plaster 
3 of sand 


235-255 
1 plaster 
3 of sand 



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Full 1/2 in. grounds should be used for best plaster work. 



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GOLD BOND SANDED PLASTER 

For Base Coats Where Prepared Sanded Plaster Is Desired 



Gold Bond Sanded Plaster is the same as cement plaster but 
is accurately factory mixed and sanded with especially selected 
and graded sharp sand. It requires only the addition of water 
and mixing to be ready for use. It is useful for localities where 
good local sand is difficult to obtain or where accurately mixed 
material is wanted 

Gold Bond Sanded Plaster is 
also desirable for use during 
the winter as it eliminates the 
need for drying sand which is 
wet and frozen or for trying to 
secure unfrozen sand. 



Gold 
Bond 



Gold Bond Sanded Plaster is 
also useful for remodeling and 
repair work as it may be mixed 
inside the building. 




At Left: 

Gold Bond Cement 
Plaster Bag 





Approximate Covering Capacity 






Plastering 

t>3SC 


Gypsum 
lath 


Wood 
lath 


Metal 
lath 


Brick and 
clay tile 


Gypsum 
tile 


Sq, yds. 

per ton 


75-S0 


60-70 


35-40 


45-55 


65-70 




No sanding required — add 


water only 







Application on Various Bases 
— Gold Bond Sanded Plasters 
are applied to the various plas- 
tering bases in the same manner 
as for Cement Plaster (see de- 
scription above) . 

Mixing — Add nothing but 
water, hoeing plaster into water 
and mixing thoroughly. First 
mix thin, then add dry ma- 
terial to bring to proper con- 
sistency. 



At Right: 

Gold Bond Sanded 
Plaster Bag 




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37 



> GOLD BOND BASE PLASTERS (Continued) 



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GOLD BOND WOOD FIBERED PLASTER 

Used for Base Coats Except on Brick and Gypsum and Clay Tile 



Unsanded or "Neat" Wood Fibered Plaster is a gypsum plaster 
containing finely shredded wood fiber and requires only the addi- 
tion of water to be ready for use. It does not require sand but 
in some localities 1 part, by weight, of sand is added. 

The wood fibered plaster when used unsanded avoids dangers 
of over-sanding and works and spreads freely and easily. The 
plaster is about two-thirds lighter in weight than sanded plaster. 
The wood fiber acts as a reinforcing and produces a dense, tough, 
strong and durable base, especially for troweling. It is superior in 
fire resisting and sound deadening qualities to sanded plasters and 
will stand up where strains and vibrations are encountered. It 
saws like wood. It is especially adapted for winter work and 
alterations as it is easily handled. 

Sanded Wood Fibered Plaster — Same as unsanded but is 
shipped factory mixed with proper amount finely graded sand. 

Mixing for Application on Various Bases 

Hoe plaster into water and allow to soak for 10 to 20 min- 
utes, then mix to the proper consistency. 

Scratch Coat — Use "Neat" or Sanded for wood, gypsum lath 
and metal lath. 

Brown Coat — Use "Neat" or Sanded for wood and gypsum 
lath and Sanded for metal lath. 

Note: Do not use either on Brick and Gypsum or Clay Tile. 



Application on Various Bases 

On Gypsum Lath — Do not wet lath. Apply in coats scratch- 
ing well to fill joints between the lathing units and scratch sur- 
face. Allow first coat to set and dry; then apply brown coai. 
and broom surface before it sets. 

On Wood Lath — Soak lath. Apply in coats, applying scratch 
coat with sufficient pressure to obtain proper key and scratch 
surface. Apply brown coat and broom surface before it sets. 

On Metal Lath — Apply in two coats, applying scratch coat, 
of stiffer consistency, to cover lath and fill mesh. Apply brown 
coat and broom surface before it sets. 

On Brick and Gypsum or Clay Tile — 

Note: Wood Fibered Plaster is not recommended for use on these bases. 

Approximate Covering Capacity 



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Plastering 
base 


Gypsum 
lath 


Wood 
lath 


Metal 
lath 


Brick and 
clay tile 


Gypsum 
tile 


Sq. yds. 
per ton 


115-120 

Unsanded 

add water 

only 


90-100 

Unsanded 

add water 

only 


55-65 

Unsanded 

add water 

only 


Not recommended on 
these bases 



GOLD BOND CONCRETE BONDING PLASTER 

For Base Coats on Interior Concrete Surfaces 



This plaster is made especially to bond to concrete surfaces, 
on which ordinary gypsum or lime plasters will not adhere prop- 
erly. It is used for scratch and brown coats. Only water should 
be added on the job. Do not use with sand. 

All surfaces of concrete must be dry, absolutely clean, free 
from oil and efflorescence and should be roughened if the surface 
is troweled smooth. 

The plaster should be ap- 
plied in two thin coats just 
thick enough to make a 
smooth wall and not over tyfc 
in. total thickness. Any plaster 
finish may be used over the 
bonding plaster. The finished 
surface should not be dec- 
orated for a year in order to 
allow time for any moisture 
in concrete to work out. 



At Left: 

Gold Bond 
Wood Fibered 
Plaster Bag 




Mixing and Application 

Mixing — Add nothing but water and hoe plaster into the 
water, allowing to soak for 10 to 20 minutes, then mix thor- 
oughly to a smooth creamy consistency. 

Application — Apply in 2 coats — First coat shall be scratched on 
as thin as possible, scratched and allowed to dry. Apply second 
coat just thick enough to level up inequalities, with total thick- 
ness not over Vs in - f° r Dot h 
coats. Scratch the surface of 
bond plaster thoroughly to pro- 
vide mechanical key for finish. 



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£= 



Approximate Covering 
Capacity 

Approximately from 90 to 
120 sq. yards per ton, depend- 
ing on roughness of concrete 
and thickness applied. 



At Right: 

Gold Bond 
Concrete Bonding 
Plaster Bag 




c: 



38 



GOLD BOND FINISHING PLASTERS 



With Regard to A. S. T. M. Specifications 



National Gypsum Company guarantees any Gold Bond Gyp- 
sum Plaster product to have about double the strength require- 
ments and to exceed by a wide margin the purity required for 



any special plaster product in the A. S. T. M. Specifications, also 
every other detail of specifications. This also applies to Govern- 
ment specifications. 



> 

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GOLD BOND GAUGING PLASTER 

For Gauging Gold Bond Lime Putty Finish 



Gauging plaster is a specially selected, ground, calcined gypsum 
used with lime putty plasters to quicken the set of the lime putty 
and prevent checking of lime finish, Is uniformly ground to a 
fineness to insure easy mixing and working qualities. Also known 
as Plaster of Paris. Supplied in following types: 

Quick Set or Slow Set 

Gold Bond Super White (White). 
Gold Bond Sapphire (Grey). 



Directions for Mixing 

Use as directed under Gold Bond Finishing Lime. 

Covering Capacity 

Under normal conditions one ton of Gauging Plaster to two 
tons of hyd rated lime by weight will cover approximately 1600 
sq. yds. 



GOLD BOND PREPARED TROWEL AND SAND FLOAT FINISHES 

For White or Sand Float Gypsum Finishes Over Gypsum Base Coats 



These prepared gypsum plasters are for use as finish over gyp- 
sum base coats in place of lime putty finish. They make a perfect 
bond with the gypsum plaster base coats. They have exceptionally 
easy working and spreading qualities, set quickly and walls may 
be decorated in any manner as soon as they become dry. There 
is no danger of lime burns in decorations. 

Sand Float Finishes contain clean sharp silica sand which has 
been screened, graded and dried. This sanded plaster is especially 
recommended for use in winter when it is difficult to secure the 
proper sand. 

Mixing and Application 

Mixing — Hoe plaster into water (adding 2 parts of plaster to 
1 part of water by volume) and allow to soak for 10 minutes. 



Mix thoroughly to produce a smooth creamy consistency and 
add water until very thin. 

Trowel Finish — Base coat must be hard and at least half dry 
before finish is applied. If suction is too great sprinkle base 
with water. Apply in three coats, the first coat very thin, well 
scratched into the surface. Allow to draw for a few minutes 
then lay on second coat and level off. Apply third coat very thin, 
filling in all imperfections and allow to draw for a few minutes. 
Then trowel to smooth finish, applying water sparingly with 
brush and complete troweling before plaster sets. 

Sand Float Finish — Gypsum base coat must be hard and about 
half dry before finish is applied. Trowel on and finish with a float 
to true and even surface, using water sparingly from a damp 
brush and complete before finish sets. 



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GOLD BOND MOULDING PLASTER 



Gold Bond Moulding Plaster (Plaster of Paris) is made for 
use in ornamental plaster work. It is made from selected gyp- 
sum rock of greatest purity and whiteness and undergoes special 
preparations for the purposes for which it is used. The purity of 
the gypsum deposits of the company allows the production of 
moulding plaster of the very finest quality. It makes an espe- 
cially smooth working plaster of uniform set. It is ground finer 
than other gypsum plasters and permits a finer surface and 
greater freedom from pin holes. 

On account of its hardness and great strength after setting it 



is used for plaster moulds and ornamental work of all kinds. 
The plaster sets with little heat resulting in low expansion and 
contraction, especially desirable when used in moulds. The low 
temperature does not affect glue or gelatine moulds. It is used 
for running mouldings, cornices and ornamental use of a similar 
type as it can be worked so smoothly and produces a perfect, 
smooth surface. 

Mixing Directions 

Mix with water only and bring to proper consistency for use. 



GOLD BOND PATCHING PLASTER 



National Gypsum Company with its years of experience in 
manufacturing plaster has perfected this easier-working patching 
plaster. Made of highest quality gypsum and requires only the 



addition of water. Spreads smoothly and hardens to a rock-like 
finish without danger of shrinkage. Pure white color. Supplied 
in 2Y 2 , 5 and 15 pound cartons. 



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BEST BROS. KEENE'S CEMENT PRODUCTS 

Made of Selected Gypsum Rock of Exceptional Purity. 
The Toughest, Most Durable and Whitest Finish Coat Obtainable 



j*wj^--'2"^- 




BEST BROS 



M t. 



KEENESi 



MEDICINE LOW* I 



KANSAS 



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MADE of purest gypsum rock, 
Best Bros.* Keene's Cement 
is the whitest finish plaster obtain- 
able and produces a wall with ex- 
treme durability. Because of its 
density it excels for wainscots in 
kitchens and baths and is also used 
extensively for the finish coat in 
auditoriums, public buildings and 
other places where the walls will 
be subjected to unusually hard 
wear or abuse. For running moulds 
and ornamental plastering effects, 
Best Bros.' Keene's Cement has 
been the "old standby" of plas- 
terers for many years because of 
its unmatched high quality and 
uniformity. 




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TYPES AND USES 
Best Bros. Keene's "Regular" 

Standard grade for ordinary plastering. It is of good color 
and fairly coarse grind so as to mix readily with lime putty; has 
a tensile strength of over 600 lbs. per sq. in. in 7 days; an 
initial set of 2 hours and a final set of 4 hours. 

Best Bros. Keene's "Fine" 

Same tensile strength and setting time as the "Regular" grade 
but is ground finer and is of uniform purity of color, being 
made from hand picked rock. Used for backing up artificial 
marble; for making caen stone; for various other effects in 
ornamental plastering; and, occasionally, for finish coat. 

Best Bros. Keene's "Fast Finish" 

Manufactured specifically for a smooth finish coat, and is 
made to set up more quickly than "Regular" grade when mixed 
with lime putty. Designed to overcome the long interval of 
time that has previously been necessary between the application 
and the final troweling of a Keene's Cement finish. It is ground 
the same as the "Regular" grade; has a job set of 2 hours; 
and a tensile strength of over 500 lbs. per sq. in. 

Best Bros. Keene's "Quickset" 

Designed specifically for castings, running mouldings, precast 
travertine, and similar purposes where the material is used neat 
and has to set in the shortest time. It is finely ground; of pure 
white color; has an initial set of 20 minutes and a final set of 
35 to 40 minutes. Tensile strength, 600 lbs. per sq. in. 



(above) Department of Commerce, Washington, D. C, Best 

Bros. Keene's Cement used for 3 % miles of corridors in this 

building because of its greater durability. 




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(below) Hospital rooms must be able to "take it." Best Bros. 
Keene's Cement is invariably the choice of architects and con- 
tractors because of its proven durability for the past 50 years. 



Best Bros. Keene's "Superfine" 

This grade is used only for the facing of artificial marble. 
It is very slow setting, having an initial set of 4 hours and a 
final set of 8 hours. It is pure white and very finely ground. 



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Medicine Lodge, Kansas . . .The mammoth plant of Best Bros., oldest and largest manufacturer of Keene's Cement in the 
country. Now operated as a division of National Gypsum Company. 

40 



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GOLD BOND FINISH LIME 



Gold Bond Lime from Famous Ohio Lime Country 



The very finest lime deposit in the world is that in the north- 
western Ohio dolomite lime fields. This is located a few miles 
south of Toledo and by far the largest quantity of finish lime 
produced in the country comes from producers located within 
an area of a radius of about five miles. 

Gold Bond Lime is produced in this area at our plant at 
Luckey, Ohio, and the purity of the lime ranks with the finest 
produced in this high quality lime producing section. 

The Quality of Dolomite Limestone 

The chemically pure dolomite limestone contains 45.5% ma g- 
nesium carbonate and 54.5% calcium carbonate. A. S. T. M. 
specifications require a 95% minimum oxides of the two com- 
bined. The Gold Bond deposits average between 98% and 99% 
containing 55.56% Calcium Carbonate and 43-41% Magnesium 
Carbonate. 

It is the magnesium carbonate, when properly burned which 
gives the plasticity and easy slip or working qualities of a build- 
ing lime. It is due to the quality of plasticity that the dolomite 
lime is so favored by the trade. Limes of high calcium content 
are not as easily worked as the Ohio dolomite lime. 

Automatic and Machine Controlled Burning 
of Lime 

One of the important steps in the production of good lime 
is in the proper burning of the magnesium carbonate. As the 
calcium and magnesium carbonate require widely different tem- 
perature to change them to oxides by burning, it requires very 
careful regulation of heat. The National Gypsum Company 
has patented and installed apparatus which definitely controls 
the burning automatically as against depending on the skill of a 
fireman in control of his fires, so that overburning is a practical 
impossibility. Overburning makes the lime tough and hard 
working without "slip" and will not hold its water against the 
suction of the wall. 



Hydration Scientifically Controlled 

The process of hydration is also absolutely and automatically 
controlled by the equipment of this company. Lime as it comes 
from the kiln exists as calcium and magnesium oxides. A defi- 
nite percentage of water is added which combines chemically 
with the calcium oxide but not with the magnesium oxide. The 
lime is then ground and sacked. 

The Reason for Soaking Lime Overnight 

The small amount of water used in hydration does not com- 
bine with the magnesium oxide. When soaked overnight, the 
magnesium oxide slowly reacts and forms a "jelly" which pro- 
duces the slip and easy working qualities of the Ohio dolomite 
lime. It will therefore be readily seen that the more perfect 
the hydration of the magnesium the greater the plasticity of the 
lime. 

Plasticity the Test of Quality of 
Gold Bond Lime 

One of the most important tests of lime is that of its plas- 
ticity. In the Federal Standard Stock Catalogue, SSlL-351, Sec- 
tion IV, Part 5, E-6, it requires that finishing hydrated lime 
shall have a plasticity figure of not less than 200. The minimum 
value which our plant specifications allow to be shipped as 
finish lime is 300. 

Mixing Gold Bond Finish Lime — Fill water tight box about 
two-thirds full of clean water. The dry lime should then be 
sifted gradually into the water until fully soaked. Enough ex- 
cess water to provide 1 to 2 in. of water over the lime should 
be supplied. Soak overnight. In application, mix 3 parts of 
lime putty by 1 part of dry gauging plaster by volume. Mix 
thoroughly. 

Covering Capacity- — Under average conditions, the propor- 
tions specified should cover approximately 500 to 700 sq. yds. 
per ton of lime. Shipped in 50 lb. paper bags. 



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GOLD BOND MASON'S LIME 



A hydrated lime for use with lime cement and sand, or lime 
and sand mortars, or for concrete construction. Used by mason 



contractors wherever a good easy working lime, which will bulk 
well in putty is required. Shipped in 50 lb. paper bags. 



Gold Bond 
Finish Lime 
Bag. 



pM—1 


I&3J 


II l[INISH LIMEJ II 


■ Factored at uickE* 01 '-. 1 




Gold Bond 
Mason's Lime 
Bag. 



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41 



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GOLD BOND COLOR TEXTURE 

A Plastic Texture Finish for Walls and Ceilings That Is Supplied Already Tinted 

Six Modern Pastel Shades and White . . . For Use Over Practically Any Surface 

The Recommended Decoration for Gypsum Wallboard 



Beautiful Textured Walls at Low Cost 

The artistic richness of textured interiors often gives the im- 
pression that they are expensive. Instead, the cost is invariably 
even less than wallpaper when genuine Gold Bond Color Texture 
is used, for this reason: In new construction, 
Color Texture is applied directly over the base 
plaster, eliminating the lime putty or white 
finish coat. In addition, the cost of wallpaper 
or other decoration is also sa%'ed. 

Another important item — textured walls are 
permanent whereas papered rooms have to be 
done over every few years. For actual beauty, 
there is no comparison between textured rooms 
with their interesting designs and wallpaper 
with its monotonous patterns repeated over 
and over. The most expensive wallpapers are 
often mere imitations of texture designs. 



Greater Coverage with Color Texture 

Two important advantages contribute to make Gold Bond Color 
Texture the most popular texturing material and incidentally, the 
most economical. First, it comes already colored and requires no 
further decoration. Second, it is a casein base product with out- 
standing texturing qualities and dries to a hard, durable finish. 
Coverage is double that of many textures because only a thin 
coating is required for even the most elaborate texture designs. 



Easy Application 



Gold Bond Color Texture is simply mixed with water; applied 
with paint brush or trowel in a thin coat — tV to zi'-i in. thick ; 
then textured with stipple brush, rubber sponge, whisk broom or 

crumpled paper. A direction 
sheet is enclosed in each car- 
ton giving specific instructions 
for application over practically 
every type of surface. 



Six Colors 

Color Texture comes in 
Ivory, Light Cream, Light 
Buff, Light Green, Pink, Light 
Blue and White. For special 
color schemes, White Color 
Texture is used and decorated 
to suit with Gold Bond 
Casein Paint (see page 44) 
Color Texture is supplied in 10 and 25 lb. cartons. 



Easily Cleaned 

Color Texture interiors can be kept clean and fresh-looking by 
going over the surface lightly with a damp cloth. . . . Caution! 
Not all texturing materials can be cleaned this way. Color Tex- 
ture can because of its casein base. 





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Charming textured interiors in light tints are always warm and inviting. In complete harmony 
with any type of architecture; any style of furnishings. 

42 



Typical Designs Produced With Gold Bond Color Texture 

The Progressive Steps to Secure the Finish Are Shown from Left to Right 



> 




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No. 1 Fine Stipple with trowel. Texture with a fine stipple brush, cleaning brush 

Gives the effect of a sand finish. Apply thin coat of Color Tex- occasionally to insure uniform texture. _ Surface may be sand 
ture with trowel or paint brush. Smooth to uniform thickness papered if desired to remove any sharp points. 



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No. 2 English Trowel Finish back edge of trowel in a curving upward stroke to secure this 

A light trowel finish showing marks of trowel. Apply thin coat effect. If stronger texture is desired apply Color Texture thicker 
with trowel or paint brush. Then trowel surface lightly, using and use more pressure when drawing the trowel. 



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No. 3 An Interesting Texture texture with rubber sponge, using face of sponge in a slightly 

This has effect of considerable movement. Apply thin coat of swirling up and down motion. Drag triangle lightly over surface 
Color Texture with trowel or paint brush. Then add heavier to create high-lights. 



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43 



GOLD BOND CASEIN PASTE PAINT 



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The Newest in Fine Interior Paint . . . Dries in One Hour with No Turpentine Odor 
Easier to Apply with Greater Coverage . . . Highest Light Reflection Without Glare 



Gold Bond Casein Paint brings new color and beauty to mod- 
ern interiors at a real saving in time and money. Every day, more 
decorators are swinging over to this remarkable interior paint 
which offers all these advantages: 



Dries in an hour. 
No turpentine odor. 
Takes water as a thinner. 
Better hiding power. 
Greater coverage. 



Self-leveling. 

Won't yellow with age. 

High light reflection. 

Non-inflammable. 

Lime-proof colors. 



With all the above advantages, Gold Bond could 
command premium prices, but on the contrary it 
costs considerably less than most interior paints for 
this reason: Gold Bond Casein Paint comes in 
modern, ( paste form and is quickly thinned with 
water (two quarts of water to a gallon of paste). 
When buying a gallon of Gold Bond, keep in mind 
that you will actually have six quarts of smooth, 
creamy interior paint after the water has been added. 

Important! Because water is used as a thinner, do not confuse 
Gold Bond Casein Paint with calcimine. Instead, it is a genuine 
casein-base paint that won't chip, peel, flake or dust-off. Specified 
by architects to meet the most exacting requirements and the 
choice of leading interior decorators. 

For Jobs in Every Price Range 

Quality alone has prompted the use of Gold Bond Casein Paint 
in the finest homes in the land; theatres, hotels and public build- 




ings. Yet, the surprisingly low price permits its use for all kinds 
of interior painting jobs including factories, lofts, cheap apart- 
ments, public garages. 

One Hour Drying . . . 

No Turpentine Odor 

Restaurants, bakeries and food stores of all kinds 
used to dread painting because the strong turpentine 
odor simply "killed" business. Now they can dec- 
orate with Gold Bond without fear of driving away 
customers because there is no turpentine aftersmell. 
. . . Hotel rooms can be repainted in the morning 
and occupied the same night. 

High Light Reflection Without Glare 

The high light reflection of Gold Bond Casein 
Paint is of utmost importance in offices, stores 
and factories, where better lighting means 
greater efficiency. White Gold Bond Casein Paint reflects 
over 98% of the light striking it and the colors rate 
correspondingly high. Lighting bills are cut as much as 
30%. 

Nine Pastel Colors and White 

Gold Bond Casein Paint is made in White, Old Ivory, New 
Cream, Buff, Rich Tan, Sky Blue, Pearl Grey, Old Rose, Deep 
Orchid, Green. Quart, gallon and 5-gal. cans, also 30-gal. drums. 




Note the contrast between the painted portion of this audi- 
torium ceiling and the barn-like appearance of the section 
still to be done. . . . Doesn't require much imagination to 
figure what the saving in lighting cost will be. 



Superintendents of many hotels and office buildings use Gold 

Bond exclusively to keep rooms looking smart and inviting. 

. . . They report, "It's cheaper and quicker than washing walls. 

Rooms can be redecorated like magic in just a few hours." 



44 




Gold 3^ 

deep • « A 

COLORS. r Go|OM|d 



DEEP • 
COLORS 




PIGMENTED 

PRIMER 




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IIMI PROOF COLORS 


■ 1 '' LBS. | 
GREEN 

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GOLD BOND PAINT PRODUCTS 

GOLD BOND DEEP COLORS 

Concentrated Casein Colors for Tinting White Gold Bond 
Casein Paint . . . Also Used Full Strength as Art Colors 

Gold Bond Deep Colors are concentrated casein paints in paste form. Made of pure color 
pigment, ground in casein and supplied in twelve brilliant colors, also black and white. They 
are used for three distinct purposes: as tinting colors for White Gold Bond Casein Paint; as 
fine interior paints by simply adding water as a thinner; as artists' colors for showcards, adver- 
tising displays and window backgrounds . . . supplied in half pint glass jars, also quart and 
gallon' cans. 

Twelve Colors, Black and White 

Bright Red, Orange, Yellow, Emerald, Blue, Violet, Indian Red, Ochre, Raw Sienna, Burnt 
Sienna, Raw Umber, Burnt Umber, Black, White. 

GOLD BOND PIGMENTED PRIMER 

An Oil-Base Primer for Use Under Gold Bond Casein Paint, 
Oil Paint, Calcimine or Texture 

Surfaces with excessive suction or uneven absorption should always be given a coat of Gold 
Bond Pigmented Primer before painting. It "kills" suction and provides a smooth, even base 
for the paint. Saves the danger of a streaked or spotty job and makes the paint go farther as 
it actually serves as a first coat. Supplied in quarts, gallons and 5-gal. cans. 

GOLD BOND LIME PROOF MORTAR COLORS 

The Gold Bond line comprises a full assortment of highest grade, non-fading, Lime Proof 
Colors used for tinting Gold Bond (white) Color Textures, Craftex, stucco, mortar and other 
water mixed materials. As all Gold Bond Lime Proof Colors are full strength, only small 
quantities are required for the average job. Accordingly, they are supplied in small, air-tight 
containers in the following colors, packed 24 cans to the case: 

Red (iy 2 lbs.) Raw Umber (1 lb.) Raw Sienna (1^ lbs.) 

Blue (1 lb.) Black {1% lbs.) Burnt Sienna (l>4 lbs.) 

Green (1% lbs.) Yellow (% lb.) Burnt Umber (1*4 lbs.) 

Note: All containers ate the same size. The difference in weights is due to the varying densities. 

Mixing 

Mix the dry color with a little water and stir thoroughly to form a thin paste. Strain this 
mixture through a fine mesh screen to remove lumps. Then add to the wet mortar, texture or 
other material to be colored. 

Important! When adding color to the wet mix, keep in mind that the tinted material 
when dry will be lighter in color. 

GOLD BOND SPACKLING COMPOUND 

For Repairing Cracks in Plaster, Concrete, Tile, Etc. 
Also for Resurfacing Doors, Trim and Furniture 

Gold Bond Spackling Compound is a smooth-working material for repairing cracks, fill- 
ing in dents and irregularities; also for resurfacing doors, furniture, etc., prior to painting. Is 
simply mixed with water, applied with a wide putty knife and dries quickly to a hard white 
surface. By adding a little white-lead, spar varnish or colors-in-oil, Gold Bond Spackling 
Compound makes an excellent Swedish Putty. 

A Handy Material with One Hundred and One Uses 

Gold Bond Spackling Compound may be used over practically any surface including plaster, 
wood, concrete and metal. To mention a few of its more popular uses ... for repairing 
cracks in plaster, wood trim, ceramic wall tiles, metal ceilings, brick, concrete, stone, etc.; 
for resurfacing checked paint, doors, furniture, toys; for filling in around pipes and wires, 
filling rat holes, etc. Supplied in handy 1-lb. and 5-lb. packages. 



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GOLD BOND CALCIMINE 

A Full Line of Calcimines Including an Improved Cold Water Calcimine; Also Hot 
Water Calcimine and DeLuxe Art Colors for Posters and School Work 

GOLD BOND COLD WATER 
CALCIMINE 

Here at no extra cost is a cold water calcimine that's made 
easy to mix. Decorators are quick to appreciate the saving 
of time in mixing due to a new method of processing the glue 
base. When water is added, the powder goes into solution 
quicker and makes a smoother, creamier mix. 

Gold Bond Cold Water Calcimine provides a beautiful deco- 
ration that dries quickly to a soft, velvety finish without glare; is 
non-inflammable and odorless. For use over practically any sur- 
face including plaster, brick, cement block, wallboard and canvas. 

10 Non-Glare Colors 

Gold Bond Cold Water Calcimine is supplied in 5-lb. and 
25-lb. bags in these colors: Ivory, Cream, Peach, Buff, Beige, 
Gray, Blue, Green, Rose and White. Where special colors are 
desired, white calcimine may be tinted to suit with Gold Bond 
DeLuxe Art Colors described below. 

GOLD BOND HOT WATER 
CALCIMINE 

A very high grade of calcimine that requires only the addition 
of boiling water to make a rich, creamy paint. Easy to apply 
and dries quickly to a soft, colorful finish without glare. Non- 
inflammable and odorless. 

Gold Bond Hot Water Calcimine is supplied in 5-lb. and 25- 
lb. bags in these colors: Ivory, Cream, Deep Cream, Fawn, Buff", 
Blue, Green, Gray, Rose and White. For special colors use 
white calcimine and tint with Gold Bond DeLuxe Art Colors. 

GOLD BOND DELUXE ART COLORS 

. Artistic colors for showcards, posters, window-backgrounds, 
stage settings, classroom uses and for tinting white calcimine. 
Made with rich color pigments, combined with a specially proc- 
essed self-sizing glue base and requires only the addition of 
hot or cold water. 




No excuse for dark, drab-looking rooms when it's so easy and 

inexpensive to redecorate with Gold Bond Calcimine. Your 

choice of many bright, colorful tones. 

Gold Bond DeLuxe Colors are supplied in handy 1-lb. cartons 
in these colors: Yellow, Orange, Brown, Red, Turquoise, Blue, 
Blue Green, Lettuce Green, Dark Green, Magenta, Maroon, Vio- 
let, also Black and White. 

GOLD BOND WALL SIZE 

Made especially as a primer for Gold Bond Calcimine but also 
used extensively by decorators for general sizing work. Pro- 
vides, at low cost, a perfect foundation for wall paper, oil paint, 
varnish, texture, etc., and incidentally increases the coverage of 
the latter materials. 

Before using a colored decoration, it is always advisable to 
give the surface a sizing coat to equalize the suction and thereby 
eliminate the chief cause for streaky or spotty jobs. If a little 
dry color is added to the mix, the sizing coat then becomes a 
combination primer and first coat. Gold Bond Wall Size is sup- 
plied in 1-lb. cartons and requires only the addition of water. 




46 



MASTER SPECIFICATIONS FOR 
INTERIOR LATHING AND PLASTERING 

GENERAL NOTES 



Uses of Master Specifications 

It is intended that the following specifications will cover prac- 
tically all conditions which are usually met with in ordinary 
construction. Only the paragraphs applying to the particular 
type of job should be selected and used by the architect. Spe- 
cial lathing bases are not included and if these are used the 
method of application and use of plaster should follow the 
recommendations of the manufacturer. 

Consulting Service on Lathing and Plastering 

The National Gypsum Company has over two hundred repre- 



sentatives located throughout its territory who will be glad to 
consult with architects and lathing and plastering contractors 
on any lathing or plastering problems which may arise. This 
is in addition to the technical laboratory and research depart- 
ment located at the Clarence Center, N. Y., plant, which 
may be called upon at any time for technical information. 

New and Old Work 

The following specifications are written only for new work. 
For alteration work the clauses will have to be altered to cover 
such work especially in regard to where old and new work join. 



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SECTION 1 

LATHING AND PLASTERING SPECIFICATIONS 



Note: (a) Acoustical Plaster — See page 89 for specifications on Gold 
Bond Trowel Finish Macoustic. 

(b) If trade practice requires separate specifications for lathing and for 
plastering, the specification should be written accordingly. 



I. General Conditions 

The General Conditions of the Contract of the American 
Institute of Architects (current edition) shall form a part of 
this specification. (If the A.I .A. Standard Form is not used 
then refer to the one used.) 



2. Scope 

2—1. This contractor shall furnish all materials, labor, scaf- 
folding and staging which will be required to satisfactorily 
complete the lathing and plastering work to be executed as 
hereinafter described or indicated on the contract drawings or 
schedules. 



3. Extent of Work — Furring, Lathing and Plastering 
3-1. All Metal Furred or Suspended Ceilings 

Note: Wood furring or hung ceilings should be specified under car- 
pentry. 

3-2. All metal wall furring and miscellaneous metal furring 

3—3. All metal stud partitions 

3-4. All lathing 

3-5. All interior plastering including Keene's Cement as fol- 
lows: 

Note: Here describe exceptions and amplifications In regard to lathing 
and plastering or refer to schedule of finishes and drawings. 

a. Note where plaster is to be omirted. 

b. Note where one or two coat plaster is required. 

c. Note where white finish is omitted. 

d. Note ceiling or beams, cornices, etc., to be furred (Type furring) 

e. Note walls to be furred (Type furring) 

f. Note if lath or base and scratch coats back of tile work, marble or 
slate are to be included or omitted from this contract. 



4. Relations with Other Trades 

4-1. Temporary Enclosures — Temporary cloth enclosures 
over all window and other exterior openings throughout the 
portions of the building to be plastered shall be provided and 
maintained by the carpenter during application and drying of 
plaster. 

4—2. Temporary Heat, Light and Water — Shall be supplied 
by others. 

Note: Plastering Contractor or General Contractor may be required to 
supply salamanders, fuel, heat and maintenance without fire hazard 
before heating plant is installed, depending on contract agreements. 
After heating system is installed heat may be supplied by heating system 
through the General Contractor or Owner. 

4—3. Grounds and Furring — All necessary wood grounds for 
furring and lathing shall be installed by others. 

4—4. Inspection of Grounds and Plastering Bases — All 

grounds and plastering bases shall be inspected by this con- 
tractor from time to time and before commencing his work and 
he shall report to the Architect and General Contractor any de- 
fects in such work which may in his opinion affect satisfactory 
finish, accuracy and stability of the work under his contract. 

4-5. Failure to report such defects requiring correction or 
replacement before commencing his work shall be construed as 
acceptance of such work by this contractor and he shall not be 
relieved of responsibility and obligation under his guaranty. 

5. Protection of Work and Building 

5-1. All finished work, such as woodwork and glass, shall be 
adequately protected by Contractor from damage and plaster 
droppings and he shall make good such damage at his own 
expense and without cost to the owner. 

5-2. Furnish, install and maintain waterproof protection at 
source of water, under all mixing boxes and gauging barrels. 
5-3. Any spill or drip of any kind shall be taken up at once 
and any sand, sawdust or protection for floor if removed shall 
be replaced with new material. 

5-4. This Contractor shall be responsible for all damage occa- 
sioned by the mixing, handling and storing of mortar and mate- 
rials or through his failure to provide necessary protection. 



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6. Patching 

6-1. All plaster work which is damaged by this Contractor 
shall be made good by him at his own expense. 

6-2. After the erection of finish by other trades, this Con- 
tractor shall patch all plaster which is damaged by other 
mechanics but the cost shall be paid for by the Contractor who 
caused the damage. 

6-3. This Contractor shall cut out, when required, any defect 
in his work and replaster and leave in perfect condition. 

7. Preparation of Surfaces 

7-1. This Contractor shall clean the surface to which or 
against which plaster is to be applied, removing all mortar 
droppings, etc., as may be necessary, to allow plaster to adhere 
to same, 

7-2. Concrete surfaces and combination tile and concrete sur- 
faces which are too smooth to receive plaster shall be suffi- 
ciently roughened by hacking to secure adequate bond. 

Note: (Hacking will be done by others.) Concrete forms should be made 
of rough boards and be free from oil. 

7-3. Concrete surfaces shall be dry and brushed free from 
dust, soot, grease and oil. (Burn off oil or grease with torch.) 
Any low places in masonry walls shall be filled out and any 
unevenness shall be straightened with unfibered plaster ahead 
of base coat. 

7-4. Efflorescence shall be removed with a wire brush and 
washed with muriatic acid and water, one (1) to five (5) 
solution. Remove acid by thorough washing with clean water. 

7-5. Wood Lath shall be wetted down as specified under 
Wood Lath, Sec. 5, Par. 1-1-1. 

7-6. Gypsum lath and fiber insulating lath shall not be wetted 
down at any time. 

7—7. Where necessary for suction, wet brick, concrete and 
clay tile surfaces before plastering. 

8. Wood Grounds 

All wood grounds shall be provided and installed by the Car- 
penter and shall be of such thickness and so set to provide 
for y 2 in. thick plaster over all types of laths and gypsum tile 
and % in. thick plaster over all brick, clay tile and other 
masonry. 

Wood Lath % in- grounds 

Gypsum Lath y 8 in. thick % in. grounds 



Insulating Board V 2 in. thick 1 in. grounds 

Metal Lath— Expanded, Sheet and Wire % in. grounds 

Gypsum Tile V2 '"■ grounds 

Brick and Clay Tile 5 /b in. grounds 

Note: Thickness of grounds includes thickness of lath. 

9. Sample Finishes 

Where special textured finishes are required, this Contractor 
before proceeding with the work shall prepare and erect, where 
directed by the Architect, sample panel of each finish required, 
not less than 3 ft. square. These samples shall be made to 
the satisfaction of the Architect. After approval by the Archi- 
tect, the finished work shall equal the samples in all respects. 

10. Workmanship 

All work shall be executed by skilled workmen in such a man- 
ner as to fulfill the requirements of the drawings and speci- 
fications. 

I I. Cleaning 

11-1. After completion of his work, this Contractor shall re- 
move from the building all scaffolding and tools of every sort 
used by him, taking care not to damage work of the other 
trades. 

11-2. All plaster rubbish, plaster droppings, etc., shall be 
removed by this Contractor and the building left broom clean. 

11-3. (This Contractor shall remove all plaster from glass 
and other finish and leave in first class condition.) 

11-4. (The removal of debris and cleaning required, result- 
ing from the work of the Contractor, shall be done by others.) 

12. Guarantee 

12-1. This Contractor shall furnish a written guarantee as 
a part of this contract, warranting all work and materials under 
this contract against defects for a period of (one year) (speci- 
fying time) from the completion and acceptance of the work 
as shown by date of final payment and he binds himself to 
repair and replace any defect which may develop within that 
period, without additional payment beyond the amount of the 
contract, when ordered to do so by the Owner or the Architect. 

12-2. (This shall also include the cost or repairs or replace- 
ment of any material, decoration or other finish damaged by 
the defects.) 



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SECTION 2 

FURRING AND SUSPENDED CEILINGS 

(Specifications for Gold Bond "Clip-on" Systems— Suspended Ceilings and 2-in. Solid Partitions are 
given in detail in separate books sent gratis upon request.) 



1. Wood Furring and Suspended Ceilings 

Note: Wood furring and suspended ceilings which are to be plastered 
should be included under Carpentry. 

2. Masonry Furring 

Masonry furring such as hollow blocks of tile, etc., should be 
included under Masonry. 

3. Materials 

3-1. Metal Furring— Shall be Gold Bond Cold Rolled Chan- 
nels. (See page 26.) 

3-2. Metal Partition Studs — Shall be Gold Bond Cold Rolled 
Channels of sizes specified. 

4. Metal Furred Suspended Ceilings 

4—1. Location — Ceilings shall be furred or suspended with 



metal furring where so indicated on plans or on schedules. 
Where finished surfaces of plastered ceilings are six (6) in. 
or more below the soffit of floor construction, they shall be 
considered as suspended ceilings. 

4—2. Hangers — Shall be placed not to exceed 4 ft. center to 
center in either direction. The minimum size for hangers 
shall be No. 8 galvanized wire, 1 x ts in. flats or g 7 2 in. round 
mild steel rods. 

The upper ends of hangers if wire, rods or flats, shall be of 
sufficient length to wrap around beams or provide a suitable 
anchorage in concrete or tile. Where steel beams or purlins 
are not more than 4 ft. center to center, hangers may be at- 
tached directly to them. When hangers are hung from con- 
crete beams or arches, the hangers shall be placed before 
concrete is poured. When ceilings are hung from terra cotta 
floors, hangers may be installed at tile joints during erection, 
or may be installed after tile is in place, holes bored clear 



48 



through tile and secured on upper side by steel rod or toggle 
bolt. 

4-3. Runner Channels— Shall be placed not to exceed 4 ft. 
on centers, and shall be not less than iy 2 in. cold or hot rolled 
channels weighing not less than 442 lbs. per thousand lineal 
feet. Lower end of wire hangers shall be secured to runner 
channels by three twists around same; lower end of rod 
hangers shall be secured to runner channels by two twists, or 
by wiring; lower end of flat steel hangers shall have holes 
punched at the proper distance to which the runner channels 
shall be bolted with not less than % in. diameter bolts. 

Runner channels shall conform to the contour of the ceiling. 
4-4. Furring Channels — Shall be not less than %-in. chan- 
nels with a minimum weight of 276 lbs. per thousand lineal 
feet; they shall be erected at right angles to the runner chan- 
nels of No. 16 galvanized annealed wire at each crossing, or 
by No. 9 wire hairpin clips. 
Furring channels shall be spaced as follows: 

Not over 12 in. apart for 3.0-lb. flat expanded metal lath is 
used, or over 16 in. apart for 3.4-lb. flat expanded metal lath; 
not over 16 in. apart for 3.0-lb. flat rib expanded metal lath; 
not over 19 x /2 in - a P art f° r 3-lb. 3 /g-in. rib expanded metal 
lath; and not over 24 in. where 3-4-lb. %-in. rib expanded 
metal lath is used. 

4-5. Metal Lath — Shall weigh not less than 3.00 lbs. for 
ceiling and 2.50 lbs. per sq. yd. for side walls, provided, how- 
ever, that minimum weight shall be governed by spacing of 
furring channels as specified in the preceding paragraph. 

The metal lath shall be wired to the furring channels (the 
long dimension of the sheet being across the channels) by No. 
18 gauge galvanized annealed wire every 6 in. along the fur- 
ring channels; there shall be one tie on side laps half way 
between channels. Lap sheets at sides and ends not less than 
1 in. 

Where ceilings, cornices or other features, formed with metal 
lath, finish against masonry walls, partitions or arch soffits, 
the lath shall extend onto masonry surface at least three (3) in. 

4—6. Brackets for cornices, beams, etc., shall be built up of 
1-in. steel members spaced same as for runner channels and 
shall be securely fastened to masonry or other structure sup- 
ports. Cross fur and lath same as for ceilings. 

5. Metal Stud Partitions 

5-1. Solid Partitions — 

(a) Metal Studs for solid partitions shall be not less than 
%-in. cold or hot rolled channels weighing not less than 276 
lbs. per thousand lineal feet, and spacing of studs shall con- 
form with weight of lath as in paragraph (a) of these speci- 
fications. 

(b) Studs shall be secured in position by inserting ends in 
holes punched % in. in top of concrete or other masonry floors 
or in soffits of masonry ceilings, or by attaching to stud shoes, 
or by placing ends in holes drilled in wood floor bucks 
anchored to masonry floors at 4-ft. intervals ; on floors by wire- 
tying to nails driven 1 in. into floors and projecting at least 
1 in. above. Where metal lath ceilings are used, a small hole 
shall be made in the ceiling lath and the end of channel 
allowed to project through it and be wired to a channel at- 
tached to the ceiling lath. 

(c) Splicing of studs shall be made by lapping chan- 



nels not less than 8 in. with flanges interlocked and tied. 

(d) Erection of metal lath, for solid lath and metal stud 
partitions, shall be the same as that given in Par. (1) except- 
ing that metal lath is applied only on one side of channel studs 
and tied instead of nailed or stapled. 

(e) Note: Solid partitions over 6 ft. high shall be temporarily braced 
horizontally on the channel side at intervals not exceeding 6 ft. vertically 
before applying plaster. Such bracing shall not be removed until scratch 
coat on the lath side of the partition has set. 

(f) In every case one channel shall be set next to wood buck 
at each side of openings and double-wired securely to 8d nails 
driven on each side of channel in pairs into buck at 2-ft. 
intervals. Bottom of door buck shall be securely spiked to 
wood plug in floor, or attached by metal anchors. 

5-2. Hollow Metal Lath Partitions- — Use Specifications 
(5-1) but call for wide single channel, or a double row of %- 
in. channels with separators every 2 ft. vertically, and metal 
on both faces of partition. 

6. Metal Wall Furring 

6-1. Where wall furring is indicated on plans or in schedule 
for walls, beams, girders and other vertical surfaces, it shall 
consist of %-in. vertical channels spaced not more than (specify 
spacing) (12-in.) on center and shall extend from floor to 
ceiling arch and be firmly secured top and bottom. Interme- 
diate braces shall be provided as specified for metal stud parti- 
tions. Flanges shall face masonry and shall be secured with 
special hook nails or other device best suited to the masonry 
or mortar joints. 

6-2. Pipe and Ducts — Pipe and ducts required to be enclosed 
shall be furred as specified for wall furring. Where required 
to support plumbing fixtures, additional horizontal members 
of ll/2 x -is in. flats shall be wired to vertical members at 
proper heights to support fixtures. 

6-3. Pipe Chases — Over 12 in. wide shall be furred in same 
manner as wall furring with metal lath extending at least 3 
in, each side of opening. 

6-4. Heads and Jambs — Fur and lath heads and jambs of 
windows and doors, when specified or indicated to be plas- 
tered, in same manner as for wall furring. 

6—5. Corner Beads — Corner beads shall be installed on all 
exterior angles in plastered rooms or spaces to run from floor 
to metal corner bead or to spring line of arches where arch 
heads are used and shall be of type and gauge as specified 
under materials. 

6-6. Metal Grounds — Shall consist of heavily galvanized 
steel and shall be set true to plane of finished wall surface and 
shall be securely fastened to the masonry, furring or other 
support. 

6—7. Miscellaneous Furring — (List here other miscellaneous 
furring required as for srair soffits and any special features re- . 
quiring metal furring and lathing.) 

6-8. No furring shall be placed until all pipes, conduits, etc., 
have been permanently placed. 

6-9. General— All furring and larhing, for all vertical or 
horizontal surfaces for walls, cornices, beams, arches, carved 
work, etc., shall be level, plumb true and rigid and accurately 
formed so that all surfaces to receive plastering shall be gen- 
erally one (1) inch back of finished surface. 



SECTION 3 



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LATHING AND PLASTERING ACCESSORIES 

Materials 

1-1. Wood Lath — Shall be No. 1 Grade, or better, free from 
knots, sap and bark, approximately % in. thick, iy 2 in. wide 
and either 32 in. or 48 in. long. 



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1-2. Gypsum Lath— Shall be Gold Bond Gypsum Lath 3/ 8 
in. thick (or l/ 2 i"- thick)— 16x48 in. (or 16x32 in. or 
16x36 in.). 



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1-3. Metal Lath — Shall be Gold Bond Metal Lath, National 
Gypsum Co. (specify type, finish and weight for spacings on 
both horizontal and vertical installations). See pages 20 and 
21 for metal lath. 

Recommendations of Associated Metal Lath Manufacturers, 
Inc., follow: 

1-4. Minimum Weight of Metal Lath — 

(a) Expanded Aletal Lath for Interior Work— 

For vertical position, partitions, etc., attached to metal supports 12 and 
1 3 Vi in. on center, lath shall weigh a minimum of 2.5 and 3.0 lb., re- 
spectively, except for solid partitions where 2.2 lath may be used on 12-in. 
spacing; and 3.4 lath on 16-in. spacing. For nailed-on partitions, 
maximum spacing shall be 16 in. for all flat laths, minimum weight 
to be 2.5 lbs. 

For tied-on ceilings attached to metal supports, maximum spacing shall 
be 12 and 13V2 in. for 3.00 and 3.4 lb. flat lath; for nailed-on ceilings, 
maximum spacing shall be 16-in. for these laths, 

(b) Flat Rib Lath— 

For Nailed or Tied-on Partitions and Furring: 

For supports spaced not to exceed 16 in. on centers 2.75 lb. 

For supports spaced not to exceed 19 in. on centers 3.0 lb, 

For Nailed or Tied-on Ceilings: 

For supports spaced not to exceed 12 in. on centers *2.75 lb. 

For supports spaced not to exceed 16 in. on centers 3.0 lb. 

For supports spaced not to exceed 19 in. on centers 3.4 lb. 

*For nailed-on ceilings, this lath may be used 16 in. on centers. 

(c) y 8 -i>i. Rib Lath— 

For Nailed or Tied-on Partitions and Furring: 

For supports spaced not to exceed 19 in, on centers 2.5 lb. 

For supports spaced not to exceed 24 in, on centers 3.0 lb. 

For supports spaced not to exceed 31'/2 in. on centers 4.0 lb. 

For Nailed or Tied-on Ceilings: 

For supports spaced not to exceed 19 in. on centers 2.75 lb. 

For supports spaced not to exceed 24 in. on centers 3.0 lb. 

For supports spaced not to exceed 31% in. on centers 3.4 lb. 

1-5. Cornerite — Shall be Gold Bond Cornerite. 

1—6. Corner Beads — Shall be Gold Bond Corner Bead 
(specify type). 

1-7. Base Screed— Shall be Gold Bond Base Screed (specify 
type). 

1-8. Picture Mould— Shall be Gold Bond Metal Picture 
Mould (specify type). 

1-9. Metal Plaster Arches— Shall be Gold Bond Metal Plas- 
ter Arches (specify type). 

2. Application of Wood Lath 

2-1. General — Lath with wood lath all (exterior stud walls) 
(wood furred walls) (stud partition) (ceiling beams or joists) 
(stair soffits), etc., which are specified to be plastered. 

Note: It is recommended that ceiling over furnace and fuel room be 
lathed with gypsum lath or metal lath for fire protection or at least for 
a distance of 5 ft. beyond all sides of the furnace. Also stud walls en- 
closing furnace room. 

2-2. All lath shall be spaced not less than i/j in. nor more 
than y 8 in. apart, a space of y 4 in. being left between abutting 
ends and shall be secured at each bearing with 3d lathing 
nails, using two (2) at each end and one (1) at each other 
bearing. 

2-3. Lath shall be applied at right angles to the supports and 
joints shall be broken at not more than every seventh lath. 
No laths shall be carried from room to room. No lathing shall 
form long vertical joints or be set vertically to fill out at 
angles or corners. 

2-4. Reinforce all re-entrant angles with Gold Bond expanded 
metal Cornerite and metal corner beads on all exterior angles. 
All strips shall extend at least 4 in. on each wall and shall 
butt at ends and not lap and shall be securely nailed or stapled 
at edges but not in corners. 

2—5. Corner Beads — All external corners, both vertical and 
horizontal, shall be protected with corner beads, of the types 
or type specified for their full height or length; same to run 
from top of base to ceiling, heads or beams or to the spring 
line of arches. 



2-6. Where wood lathing on walls, partitions or ceilings 
abut masonry work, strips of painted metal lath, extending at 
least 4 in. on each side of the intersection shall be securely 
fastened. Lath shall weigh not less than 2.5 lbs. per sq. yd. 

2—7. Where heat pipes are concealed in walls or partitions, 
they shall be lathed over with strips of Gold Bond Gypsum 
Lath or Gold Bond Painted Expanded Metal Lath nailed se- 
curely to nearest supports. 

2-8. Openings or where studs are spaced over 16 in. wide, 
as back of medicine cabinets, etc., shall be lathed with ex- 
panded metal ribbed lath. 

Note; Add here any other special condition requiring metal lath, such 
as back of tile wainscot, etc. 

2-9. Grounds for use with wood lathing shall be % in. thick, 
including thickness of lath and shall be installed as specified 
under Carpentry. 

3. Application of Gold Bond Gypsum Lath 
General — 

3-1. Lath with Gold Bond Gypsum Lath all (exterior stud 
walls) (wood furred walls) (stud partitions) (ceiling beams 
or joists) (stair soffits), etc., which are specified to be plas- 
tered. Studs and joists shall be spaced 16 in. on centers. 

3-2. Nailing edges of lath shall have at least % in. bearing 
on all studs, joists, etc., the length of the lath laid at right 
angles to studs. Horizontal joints shall abut, breaking joints 
in each course. Vertical joints of wall shall be staggered with 
ceiling joints so they do not meet. Vertical joints on opposite 
side of partition shall be staggered and not occur on opposite 
sides of the same stud. 

3-3. Nails shall be 3d lVg-in., 13 gauge, yg-in. head, blued 
lathing nails spaced approximately 5 in. apart using 4 nails 
to each stud — 16 nails to a 16x48 in. panel. First nail about 
% in. from edge of panel. Nail center bearing first, then 
outer edges. 

3-4. Fit lath tight together at all re-entrant angles and cor- 
ners. Fit lath accurately around all electric boxes and similar 
openings. Cutting shall be done with sharp hatchet or knife 
and then breaking over a straight edge. 

3-5. Where any gypsum lathed wall, partition or ceiling abuts 
masonry, strips of Gold Bond Reinforcing Mesh or Gold Bond 
Expanded Metal Lath weighing 2.5 lbs. shall extend at least 
6 in. on masonry and 6 in. on gypsum lath, fastening edge to 
masonry and to gypsum lath. 

3-6. All re-entrant angles shall be reinforced over the gypsum 
lath with Gold Bond Cornerite extending 3 in. each side. Ends 
shall abut and not overlap. 

3-7. All grounds for gypsum lath shall be % m - 'hick (in- 
cluding thickness of lath furnished, installed and specified 
under Carpentry). 

4. Application of Gold Bond Gypsum Lath, Perforated 

or with Aluminum Foil Insulation 

Same Specifications as for standard Gold Bond Gypsum Lath. 
For ceilings of Perforated Gypsum Lath with one hour fire 
rating, see instructions on page 15. 

5. Application of Gold Bond "Floating Wall" System 
See page 18 for specifications. 

6. Application of Gold Bond Metal Lath 

6-1. General — Lath with expanded metal lath all studs and 
beams for (interior stud walls) (wood furred walls) (stud 
partitions) (ceiling beams) (furred or suspended ceilings) 
(stair soffits) . 

6-2. Application to Wood Supports — Metal lath shall be 
nailed to wood supports and nails shall be not less than 4d 
or 6d nails or l l / 4 in. in No. 14 gauge wire staples driven to 
a penetration of not less than % in. and 1 in., respectively, 
and fastened every six (6) in. along each support. Side joints 
shall be wired once between supports. 

6-3. All rib lath shall be fastened at all ribs to each support 
and shall be wired at edges once between supports. 



50 



6-4. All metal lath shall be fastened to masonry with special 
hardened steel nails, self-clinching nails or other device best 
suited to type of construction. 

6-5. Attachment to Metal Supports — Metal lath shall be 
wired to metal supports at intervals not exceeding 6 in. with 
not less than No. 18 gauge galvanized soft annealed wire and 
shall always be tied where sheets lap at channels and at edges 
once between channels. 

6-6. Metal Lath shall be erected with the long dimension of 
lath across the supports; rib lath with the ribs against the sup- 
ports. 

6-7. Lath shall be first applied to ceilings and the sheets 
carried down 6 in. on side walls and partitions. If metal lath 
is not used on the ceilings, the lath shall start at the top of the 
wall and be bent and carried 6 in. on to the ceiling joists so 
that no joints shall occur at intersection of ceiling and walls. 

6-8. On walls, lath shall be started on one stud away from 
the corner, be bent into corner and carried onto the abutting 
wall so as to avoid a joint at juncture of walls. Where %-in. 
ribbed lath is used on ceilings or walls, it shall be butted into 
all joints, and strips of lath not less than 8 in. wide shall be 
bent into the shape of an "L" (Cornerite) 4 in. on each side 
and shall be securely wired along each edge of the sheet but 
not in corner. 

6-9. Where any wall, partition or ceiling abuts masonry, the 
metal lath shall extend onto masonry at least 6 in. and be well 
fastened aL edges to joints of the masonry. 

6-10. Lath shall be placed so that the lower sheet laps over 
the upper (not vice versa) and shall be securely attached to 
supports. Nails or staples shall be so placed that they occur 
where sides of sheets lap at supports. 

6-11. Expanded metal shall be lapped at sides not less than 
Y 2 in. and at ends not less than 1 in. End laps shall occur only 
over supports. 

6-12. Ribbed lath shall be lapped at sides by nesting outside 
ribs, and at ends, 1 in. 



All grounds for metal lath shall be 3^ in. thick including the 
lath and will be furnished and installed as specified under 
Carpentry. 

Note: The metal lath specifications have been adapted from those of 
the Associated Metal Lath Manufacturers, Inc. 

Note: No attempt has been made to include specifications for woven wire 
lath and many other forms of lath. For these, see Manufacturers' 
Specifications. 



7. Metal Arches, Base Screeds, Corner Beads, etc. 

7-1. Metal Plaster Arches — Gold Bond Metal Plastering 
Arches of the No. and shape as noted hereinafter or on the 
drawings, shall be securely set in position over the lath in 
accordance with the details. Corner beads at jambs shall join 
arch beads accurately without break. 

7-2. Corner Beads — All external corners, both vertical and 
horizontal, shall be protected with corner beads, of the types or 
type specified for their full height or length; same to run from 
top of base to ceiling, heads or beams or to the spring line of 
arches. 

Note: If beveled, chamfered or rounded corners are desired, make note 
where these will occur and change paragraph above. 

7-3. Metal Picture Moulds — Gold Bond Metal Picture 
Moulds shall be installed in the following locations. (List 
here, or in schedule of finishes, or on drawings, spaces to have 
picture mould.) 

Picture moulds shall be accurately set, true and parallel with 
ceiling line and substantially secured. 

7-4. Metal Base Screeds or Wainscot Cap— Gold Bond Base 
Screed shall be installed in the following locations, (List here, 
or in schedule of finishes, or on drawings, spaces to have base 
screed for base, ivainscot cap, etc) 

Note: Where special items such as metal bases, with or without electric 
wire ways; chair rails; door and window trim, etc., are desired, they 
should be included in the proper trade specification according to local 
jurisdiction. 



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SECTION 4 

PLASTERING MATERIALS— BASE AND FINISH COATS 






Materials and Mixing 

1-1. General — All materials used in plastering shall be stored 
in a dry place above the ground and shall be handled in such a 
way as to prevent deterioration or intrusion of foreign matter 
into the plaster. 

1-2. Lime, Gypsum and Cement shall be delivered and stored 
in original packages of the manufacturer. Any materials in con- 
tainers showing water marks or which have been damaged or 
materials that have deteriorated shall be immediately removed 
from the premises. 

1-3. Mixing boxes for base coats shall be clean and tight, 
approximately W 2 x 7 ft. and 12 in. deep, and 2j/ 2 * 4l/ 2 x 10 
in. deep for finish coats and raised 4 in. at one end. Clean 
mixing boxes after each gauging. 

1-4. Machine mixing shall be permitted in machines made 
for this purpose if they are cleaned after mixing and kept free 
of plaster from previous gaugings. 

1-5. Tools shall be kept clean and shall not be rinsed in 
gauging water. 

1-6. No more material shall be mixed than can be applied in 
one ( 1 ) hour. Do not mix one gauging with another. Plaster 
shall not be retempered after it has commenced to set. 

Note: Clean water and proper mixing following the direction of the 
Manufacturer ate of extreme importance to good work. 

1-7, Plaster shall be kept from freezing for 24 hours after 
application and no finish coat shall be applied to base which is 
frozen. 



1-8. In hot, dry weather, all openings shall be enclosed with 
muslin screens or windows kept closed to prevent plaster from 
drying before it has set; after that, windows shall be opened 
to permit wall to dry quickly. 

1-9. All materials for plastering, except sand, shall be as 
manufactured by National Gypsum Company, Buffalo, N. Y. 

2. Water 

Water shall be clean and fit to drink, free from oil, acids, alkali 
or vegetable matter. 

3. Sand 

3-1. Sand for base coats shall be sharp, clean and free from 
saline, alkaline, organic or other impurities. It shall be graded 
from fine to coarse in conformance with the Standard Specifica- 
tions for Plastering Sand of the American Society for Testing 
Materials. Pass through six-mesh screen. 

3-2. Sand for finish coats shall all pass a No. 12 screen and 
shall be white, hard, durable grains free from soluble salts or 
injurious amounts of organic matter. 

4. Plaster 



Coat Plaster— Shall be Gold Bond Gypsum 



4-1. Base 
Plasters. 

4-2. Finish Plaster— Shall be Gold Bond Hydrated Lime 
Putty with Gold Bond Gauging Plaster or Gold Bond Gypsum 
Prepared Plaster (specify which). 
4-3. Keene's Cement— Shall be Best Bros. Keene's Cement. 



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SECTION 5 

BASE COAT PLASTER— (SCRATCH AND BROWN) 



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1. Cement Plaster 

1—1. On Wood Lath — Scratch Coat — Shall consist of one (l) 
part of fibered plaster to two (2) parts by weight of dry sand. 

1—1—1. Soak lath thoroughly 12 to 24 hours before, and 
again an hour or two before, plastering is started, 

1-1-2. Apply in two coats, scratch coat to be applied with 
sufficient pressure to obtain a good key, filling all spaces be- 
tween the lath and leaving a light coat over lath. Scratch sur- 
face thoroughly to secure bond for brown coat. 

1-1-3. Brown Coat — Shall consist of one (l) part plaster 
(fibered or unfibered; specify which) to not more than three 
(3) parts by weight of dry sand. Second coat shall be applied 
as soon as scratch coat is set hard and at least % dry, to a true 
and even surface. Surface of the second brown coat shall be 
darbied and broomed to afford a bond for the finish coat. 

1—2. On Gypsum Lath or Insulation Lath — Scratch coat shall 
consist of one ( 1 ) part fibered or unfibered plaster to not more 
than two (2) parts by weight of dry sand. 

1-2—1. The Gypsum lath shall not be wetted before applying 
plaster. 

1—2—2. Scratch Coat — Apply with sufficient pressure to work 
plaster well into the joints. Scratch surface to provide bond for 
the brown coat. 

1-2—3. Brown Coat — Same as above for wood lath. 

1-3. On Wire or Metal Lath — 

1—3—1. Scratch Coat — Shall consist of one (1) part of fibered 
plaster to not more than two (2) parts, by weight, of dry sand. 

1-3—2. First coat shall be applied with sufficient pressure to 
obtain good key, lightly covering lath. Scratch surface to secure 
bond for brown coat. 

1-3-3. Brown Coat — Same as for wood lath. 

1—4. On Brick, Clay Tile or Gypsum Tile — 

1—4—1. Soak brick and clay tile and sprinkle gypsum tile be- 
fore commencing plastering to reduce suction. 

1-4-2. Scratch Coat — Shall consist of one (1) part of fibered 
(or unfibered) plaster to not more than three (3) parts, by 
weight, of dry sand. 

1-4—3. Apply plaster to thickness of grounds (5^ in.) in two 
(2) coats. Apply first coat in thin layer to obtain bond and 
double back immediately with second coat, straighten to true 
surface with darby and broom surface for finish coat. 

2. Gypsum Sanded Plaster 

2—1. Gypsum Sanded Plaster shall be applied same as above 
for Cement Plaster without the use of sand but with the addi- 
tion of water. 



2-2. Special Sanded Plaster — Shall be used for clay and 
gypsum tile and brick. 



3. Gypsum Wood Fiber Plaster 

Noie: W/ood Fibered Plaster is used invariably for one (1) and two (2) 
coat work, never three (3) coat work. 

3-1. On Wood Lath— 

3—1—1. Soak lath thoroughly 12 to 24 hours before, and again 
an hour or two before, plastering is started. 

3-1-2. Scratch Coat — (Mixed with water. ) Apply with suf- 
ficient pressure to obtain a good key, filling all spaces between 
the lath and leaving a light coat over lath. Scratch surface to 
secure bond for brown coat. 

3-1-3. Brown Coat — (Mix equal parts of plaster and sand.) 
Apply to thickness to fill out to grounds and broom surface. 

3—2. Gypsum Lath — ■ 

3-2-1. Gypsum Lath shall not be wetted before applying 
plaster. 

3-2-2. Scratch Coat — (Mixed with water, no sand,) Apply 
with sufficient pressure to work plaster well into joints. Scratch 
surface to provide bond for brown coat. 

3-2-3. Brown Coat — (Same as for Wood Lath above.) 
3-3. On Wire or Metal Lath— 

3-3-1. Scratch Coat — (Mixed with water.) Apply with 
sufficient pressure to obtain good key, lightly covering lath; 
scratch surface to secure bond for brown coat. 

3-3-2. Brown Coat- — -(Mixed with equal parts of plaster and 
sand.) Apply to thickness to fill out grounds and broom sur- 
face. 

3—4. On Brick, Clay Tile or Gypsum Tile — 

Note: Do not specify wood fibered plaster for these bases. 



4. Concrete Bonding Plaster 

(For Use on Concrete Surface) 

(See notes regarding preparation of surfaces.) 

4—1. Scratch Coat — (Mixed only with water.) Apply in 
one (1) or two (2) coats with as great pressure as possible, to 
thickness of not more than y s in. and score heavily for bond of 
finish coat which shall be applied as thin as possible. 

4—2. Gold Bond Wood Fibered Gypsum Plaster — May also 
be used (unsanded) for concrete surfaces in place of Con- 
crete Bonding Plaster. 



SECTION 6 

FINISH COAT PLASTER 



I. Smooth White Finish 

(Lime Putty and Gauging Plaster.) 

1-1. Hydrated Lime — Allow to soak twenty-four (24) hours. 

1-2. Finish Coat — Shall consist of three (3) parts of lime 



putty to one part of dry gauging plaster by volume equivalent 
to two (2) parts of dry, hydrated lime to one (1) part gauging 
plaster by weight, and shall be thoroughly and uniformly mixed. 

1-3. It shall be applied after the base coat is hard, set and 
about dry. Sprinkle surface of base coat with water before 
applying finish coat when necessary to kill suction. 



52 



Note: Do not apply finish on a base coat containing frost. 

1-4. Apply in two (2) coats, first light scratch coat and the 
second time filling in all imperfections and straighten by means 
of straight edges. 

1-5. Trowel surface to desired finish, keeping wet with brush. 
Bring same to complete troweling before plaster has set. 
Surfaces shall be perfectly true and even without scratches, 
ridges, waves, chips, voids, cracks, etc. All angles must be 
true, sharp, straight and clean. 

2. Prepared Gypsum Finish [Using Gold Bond 

Trowel Finish Plaster) 

2-1. Finish Coat — Plaster is ready after thoroughly mixing 
with water, allowing to soak for ten (10) minutes without 
hoeing. Make mix very thin and creamy. 

2-2. Base coats must be set and hard and about % dry. If 
too dry, cut suction by sprinkling with clean water. 

2-3. Apply finish in three coats ; first coat applied as thin as 
possible to handle and scratch thoroughly into base coat. 
Let draw for a few minutes, then apply second coat, leveling 
up. Apply third coat as thin as can be handled, filling in cat 
faces and imperfections. Let draw and then trowel to smooth 
surface, applying water sparingly with brush, but not enough 
to kill face of plaster. Avoid joinings by working top and 
bottom of wall at same time. Finish coat shall not be less than 
•^ in. or more than ]/ 8 in. thick. 

3. Sand Float Finish (Using Gold Bond 

Sand Float Finish) 

3-1. Using Prepared Sand Float Finish—add water only. 

3-2. Base coats must be set and hard, about % dry, before 
applying finish coat. 

3-3. Finish shall be applied with trowel, scratch in thin 
coat, then double back with second coat to bring to even, level 
surface free from surface marks. Use float (carpet) (felt) 
or (cork) to bring to final, even, granular finish. Apply water 



sparingly with brush, being sure to complete floating before 
plaster has set. Avoid joinings by working top and bottom 
of wall at same time. Finish coat shall not be less than tV or 
more than i/ g in. thick. 

4. Keene's Cement Lime Trowel Finish 

4-1. Finish Coat — Shall consist of three (3) parts of Keene's 
Cement to one (1) part of lime putty by volume (or 100 lbs. 
dry Keene's Cement to 40 lbs. lime putty). 

4—2. Base coats must be set and hard but not thoroughly 
dry before applying finish coat. If base coat is dry, spray 
slightly with water but do not soak. 

4—3. Apply thin coat well scratched in, then double back and 
fill out to even surface. Allow to draw for a few minutes, 
then trowel and brush to a smooth finish, using as little water 
as possible while troweling. Thickness shall not be less than 
ik in. or more than y 8 in. 

4-4. Imitation Tile — Marked off for imitation tile, the thick- 
ness shall depend on depth of scoring but in no case should be 
less than ^ in. at bottom of scoring. 

4-5. Polished Surface — After cement is dry, polish with a 
cloth to a high polish. 

5. Texture Finish (Gold Bond Color Texture) 

Over Gypsum Base Coats — Where used over two-coat gypsum plaster, 

walls should be floated before application of Color Texture to increase 

yardage and to insure more uniform thickness. Dry walls may be sized 

• or dampened lo increase yardage and give longer time for texturing. 

Over Lime Finish — It is not good practice to apply Color Texture or 
any other decorative material over fresh lime putty finish, sooner than 
four months after application of the lime putty. If, however, it is 
desirable that the walls be decorated at once, Gold Bond Color Texture 
can be applied as soon as the lime putty is thoroughly set and dry. 
The lime must not be sized. 

Color Texture may be applied over old lime putty walls with or 
without sizing. Follow detailed instructions packed in every carton, 



SECTION 7 

ORNAMENTAL PLASTER WORK 



1. Cornices and Mouldings 

1-1. Cornices and Mouldings of size or girth required should 
be specified, shown on drawings or noted in schedule of finishes. 

2. Ornamental or Enriched Work 

2-1. Ornamental or enriched work should also be shown on 
details, character desired described in specifications and noted 
on schedule of finishes. 



3. Models 

3-1. All ornamental work shall be executed from models ap- 
proved by the Architect. 

3-2. Models shall be furnished under a cash allowance of 
( ) which shall be included by this Contractor in his con- 

tract. Models shall be executed by a modeler (selected by) 
(satisfactory to) the Architect, and the work shall be executed 
under the direction of the Architect. Models shall be delivered 
by the modeler at his studio, ready packed, to this Contractor 
who shall pay all charges of transportation. 

3-3. Models shall be furnished to this Contractor without 
cost to him by the Owner. Models shall have been prepared 
under the direction of the Owner. 



4. Materials 

4—1. Materials shall be Gold Bond Moulding Plaster for run 
mouldings and ornamental work. 

4-1-1. Mixing — Add water only to Gold Bond Moulding 
Plaster. 

5. Run Work 

5-1. Run Work shall be run full, true and even in accordance 
with Architect's details. All curved work shall be run true to 
radius. 

5-1-1. Templates — Shall be of metal, clean cut and accurate 
with the Architect's full-size details. 

6. Cast Work 

6-1. All enriched work and ornamental work which cannot 
be run in place on the job, shall be of best quality, cast from 
gelatine moulds. All work shall be properly backed, cast solid 
or hollow, and properly reinforced with wood or iron, and shall 
be securely stuck and held in place with copper wire. 

6-1-1. Cast ornamental coffered ceilings shall be cast in sec- 
tions and reinforced so that sections can be secured to hangers 
or other support from ceiling slabs, etc. 

6-1-2. All cast work shall be set true in surface and align- 
ment and any rough spots shall be finished and sand papered 
and left perfect, ready for decoration. 



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GOLD BOND GYPSUM WALLBOARD 

For New Work or Quick Modernizing 
Rooms May Be Paneled or the Seams May Be Concealed 





This sketch shows how a few panels of Gold Bond Wall- 
board will transform a large, ugly room into a smart, 
comfortable apartment and double its rental value. 



Old bathrooms can be quickly modernized with Gold Bond 
at surprisingly low cost. Any carpenter can do the work 
in a few hours with little muss or inconvenience. 




You wouldn't recognize this as a wallboard room because the joints are invisible . . . treated with Gold Bond Perforated Tape 
Joint System. For the decoration, Color Texture in a delicate pastel tint. 



54 




SECTION THREE 

GOLD BOND 

GYPSUM 
WALLBOARDS 



Pages 56-5 7 
GYPSUM WALLBOARD 

Page 58 
JOINT SYSTEMS 

Page 59 
SPECIFICATIONS . . . GYPSUM WALLBOARD 

Pages 60-61 
GYPSUM GRAIN BOARD 

Pages 62-63 
GYPSUM SHEATHING 

Page 64 
GYPSUM TILE BOARD 

Page 6 5 
HARDBOARDS 

Page 79, Section Four 

GYPSUM WALLBOARD 

With Aluminum Foil Insulation 

Pages 68-78, Section Four 

GOLD BOND FIBRE INSULATION BOARD 

PLANK, TILE, SHEATHING, ROOF BOARDS 



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GOLD BOND GYPSUM WALLBOARD 

The Pioneer Lightweight Gypsum Wallboard, Made 

Under Exclusive Patents . . . Fireproof, Non-Warping 

Three Finishes: Plain, Tile, Imitation Wood-Grain 



GYPSUM wallboard in its present highly efficient form is 
relatively a new-comer to the building products field. Prior 
to 1925, when National Gypsum Company was organized, gyp- 
sum boards weighed about 2000 pounds per thousand square feet, 
They were brittle, breaking easily, and chipping along the nailing 
edge. Because of their excessive weight and fragility, their use 
was limited. 

Gold Bond Changes Industry 

Then in 1925, came Gold Bond with patents covering a revo- 
lutionary type of gypsum wallboard. The new product weighed 
1700 pounds against the old 2000 pound weight ... it was 
much stronger ... its millions of tiny air cells gave insulation 
never before dreamed of in gypsum wallboard. Overnight 
gypsum wallboard became a practical building material, with a 
hundred-and-one uses in remodeling homes, stores, factories, 
offices, garages, and all types of building, 

New Patents for Lighter Board 

Years of pioneering followed, during which time Gold Bond 
continued to improve the quality of its board. Gold Bond engi- 
neers were unceasingly at work in an endeavor to further lighten 
and strengthen gypsum wallboard. They succeeded. And in 
April, 1934, United States patent numbers 1,932,956 and 
1,946,077 were issued covering the manufacture of a gypsum 
wallboard of extremely light weight plus super-strength. 



This important improvement was brought about through a 
unique method of greatly increasing the number of tiny, dead 
air cells in the gypsum core. The new board, although lighter 
in weight, is stronger, more flexible or resilient, higher in insula- 
tion value. And it may be nailed close to the edge without 
splitting. 

Exceeds Federal and ASTM Specifications 

The National Gypsum Company guarantees its gypsum wall 
board products to exceed by 100% the strength requirements of 
Federal Specifications SS-W-51 A and ASTM specifications C-36 
for gypsum wallboard, and to meet all other requirements of 
these specifications. 

New Products Introduced 

Following the perfection of standard Gold Bond Gypsum 
Wallboard, Gold Bond Gypsum Tile was announced, followed 
by Gold Bond Gypsum Wallboard with Aluminum Foil Insula- 
tion and Gold Bond Grain Board, which in texture and grain 
gives the effect of wood paneling at a great saving in cost. The 
latter product is made in three distinctive finishes — Gumwood, 
Mahogany and Knotty Pine and comes already lacquered. 

In addition to the standard board with Square Edge as pic- 
tured below, Gold Bond Board is also made with Recessed Edge 
and T. and G. Edge as shown on the preceding page. There are 
three thicknesses: ]/ 4 inch, % inch and l/ 2 inch. 



For Gold Bond Gypsum Wallboard and Lath with Aluminum Foil Insulation, See Page 79. 




A panel of % in. Gold Bond Gypsum Wallboard showing the distinctive edge label 



56 



Panels Applied Vertically 

14 or H-in. Gold Bond Gypsum Wallboard, should be applied 
vertically or parallel with studs. Use headers (extra 2x4's) 
where necessary to provide a solid backing at all edges. 



Panels Applied Horizontally 

Vz-in. Gold Bond Gypsum Wallboard with Recessed Edge or 
T. & G. Edge should be applied horizontally or crosswise to 
studs, which provides greater structural strength. With T. & G. 
Board, the groove edge should be down. 



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Nails at edges are spaced 3 in. apart and % in. in from edge 
of panel. Center nails (to the intermediate studs) are spaced 
6 in. apart on ceilings; 9 in. apart on walls. 

Fireproof . . . Won't Warp, Expand or Contract 

Gold Bond Gypsum Wallboard is fireproof and provides valu- 
able protection for wood framing members. The core is solid 
gypsum rock. Tests prove the fire resistance of Gold Bond is 
unexcelled by any other gypsum wallboard. Panels are unaffected 
by dampness or climatic changes and will not warp or buckle 
because there is no expansion or contraction. 



Work from ceiling to floor, applying the top panel first. Use 
headers (extra 2 x 4's) where necessary to provide a firm backing 
at all edges. Stagger vertical joints. 

Sizes and Thicknesses 



Thickness 


Width 


Length 


V 4 in. Square Edge 
3 /s in. Square Edge 
V2 in. Square Edge 


48 in. 
48 in. 
48 in. 


4, 5, 6, 7, 8, 9, 10, 11, 12 ft. 
4, 5, 6, 7, 8, 9, 10, 11, 12 ft. 
4, 5, 6, 7, 8, 9, 10, 11, 12 ft. 


Ys in. Recessed Edge 
V2 in. Recessed Edge 


48 in. 
36 and 48 in. 


8, 9, 10 ft. 
8, 9, 10 ft. 


Yl in. T. & G. Edge 


48 in. 


8, 9, 10 ft. 




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Another charming room 



Gold Bond Grain Board for the walls, Standard Gold Bond Gypsum Board for the ceiling 
decorated with Gold Bond Color Texture. 



57 



>- GOLD BOND PERFORATED TAPE JOINT SYSTEM 

2E A Simplified Method of Concealing Joints of Gypsum Wallboard for a Smooth, Seam- 
less Wall, Ready for Decoration 



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1. Filling the channel with cementing plaster 




2. Pressing the perforated tape into place 



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3. Smoothing surface and feathering out edges 



Gold Bond Perforated Tape Joint System is for 
use with any style of Gold Bond Gypsum Wallboard, 
square edge, tongue and groove edge or recessed edge. 
Comprises the use of a fibre perforated tape in con- 
junction with a smooth-working cementing plaster. 

This System works particularly well with recessed 
edge board because the recess along the edge of the 
panel forms a perfect channel for the tape and 
cement. The pictures at the left show the easy steps 
in applying. If normal care is used, the panel inter- 
sections can be completely concealed prior to painting, 
papering or texturing. 



Application 

Fill the hollow or channel with the cement as 
illustrated in Step No. 1, using a 5-in. putty knife. 
The cement should extend 1/2 in. beyond the edge 
of the channel. Apply the perforated tape imme- 
diately, directly over the cement and press it into 
place with the putty knife which automatically 
forces some of the cement through the perforations, 
as shown in Step No. 2. 

The cement forced through the perforations 
should be smoothed over with putty knife and al- 
lowed to dry. Next, apply another thin coating of 
cement so that the tape will be completely hidden. 
Feather out edges as smoothly as possible and let dry 
thoroughly. Intermediate nail heads should also be 
carefully filled with cement and brought flush with 
the surface of the board. The last operation is 
sanding the treated joints and the filled nail heads 
with coarse and then fine sandpaper. 



Coverage 

Standard size carton contains one 250-ft. roll of 
Perforated Tape and cementing plaster — enough for 
550 to 650 sq. ft. of Gypsum Wallboard. 

Small size carton contains one 2 5 -ft. roll of Per- 
forated Tape and cementing plaster — enough for 55 
to 65 ft. of Gypsum Wallboard. 



GOLD BOND 
FINISHER 

For an Inexpensive, Quick Job 

Gold Bond Finisher is mixed with water to a 
putty consistency and applied with putty knife be- 
tween the panel intersections and over the exposed 
nailheads. When thoroughly dry, is sandpapered 
smooth. Supplied in 5 lb. packages. ... Of course, 
it isn't possible to do as good a job with Finisher as 
with Perforated Tape Joint System nor will the joints 
be as strong as when reinforced with the perforated 
tape and special cementing plaster. 



58 



STANDARD SP 

FOR APPLICATION OF GOLD 

1. Scope of Work 

List all walls, ceilings and other surfaces which are to be 
covered with Gold Bond Gypsum Wallboard. 

2. Framing 

2-1. Framing of all studs and joists shall be 16 in. on 
center, unless for bearing partitions which are 12 in. on 
center, and shall follow general good practice. 
2-2. Headers of 2 x 4 in. shall be provided in ceilings and 
wherever else required to provide proper nailing for all ends 
of Gold Bond Wallboard . . . also between studs for base- 
boards, wainscot, or other finish, and for furring to take wood 
beams, cornices, etc. 

2-3. For old plaster ceilings, nail 1 x 2 in. furring strips 
over the plaster, to provide proper nailing for ends and inter- 
mediate support of boards, using 8d nails. 

3. Material 

3-1. Wallboard — Where wallboard is referred to herein- 
after, it shall mean Gold Bond Gypsum Wallboard as manu- 
factured by National Gypsum Company, Buffalo, N. Y. 
3-2. Gold Bond Wallboard shall be 0/ 4 in.) (% in.) 
thick in lengths to run full height on walls from floor to 
ceiling and to headers on ceilings. 

Note: Where y 2 -in. Gold Bond Wallboard with T. & G. Edge or 
Recessed Edge is used, it shall be applied at right angles to studs 
and joists. 

3-3. Nails for % in. and 3/ 8 in. Gold Bond Wallboard shall 

be 3d, blued nails iy s in. long for use over studs, joists or 

beams. For ^j-in. board use 4d nails 1% in. 

3-4. For directly over old plaster use 6d cement coated 

common nails 1% in. long. 

3-5. Where ceiling has floor above use 4d cement coated 

nails, l 3 /g in. long for ceiling wallboard. 

4. Handling and Preparation 

4—1. Receiving Material — Wallboard shall be piled flat on 
floors with reverse side up except first board which shall be 
turned down. 

Note: (Wallboard shall not be delivered on the job until doors and 
windows are in place.) 

4-2. Handling — Wallboard shall be handled with long 
edge up. 



EDIFICATIONS 

BOND GYPSUM WALLBOARD 

4-3. Sawing and Cutting — All required cutting of wallboard 
shall be done with a saw unless joints will be covered by 
trim. Sawing shall be done with sharp handsaw with back 
of board placed down and supported close to sawed edge. 
Other cuts may be made by scoring with sharp edge of 
hatchet or chisel and breaking over straight edge. Bevel the 
face side of cut edges and mill cut end with coarse sand paper 
so that no rough paper edges will remain, unless covered 
by trim. Recut the ends of all wallboards which have been 
damaged by handling. 

5. Application 

5-1. Inspection — Before applying wallboard see that all 
edges and ends are perfect and all ends and cut edges are 
face beveled and that faces of boards are undamaged. 

5-2. Wallboard, with back toward studs, shall be applied 
directly to studs, beams, etc. Horizontal joints shall be made 
only over framed headers. 

Note: All closed edges of panels shall be butted together. Sawed 
edges (with gypsum core exposed) or mill-cut ends shall be spaced 
Va in. apart. 

5-3. Nailing — Wallboards shall be nailed first to inter- 
mediate studs or beams and nails driven straight in, with 
heads set slightly below the surface without using nail set. 
Nails shall be spaced 9 in. apart on intermediate studs of 
walls and 6 in. apart on ceilings. Nails shall be spaced 3 in. 
apart and % in. back from all edges and ends. Boards shall 
first be tacked on edge to hold to adjoining edge and then 
shall be nailed first to each intermediate support working 
from center toward ends and finally sides and ends shall be 
nailed, with nails opposite each other on edges. 

5-4. Ceilings — Ceiling boards shall be erected first and 
length of board shall be at right angle to ceiling beams. 
Panels shall be in one piece as far as possible but if joints 
occur they shall be broken unless covered with strips or wood 
beams. 

5-5. Walls— Wallboard shall be applied in full lengths 
from floor to ceiling and parallel to framing. (V2-in. Wall- 
board with Recessed Edge or T. & G. Edge shall be applied 
at right angles to framing with groove edge down and the 
full length panels shall extend above and below openings 
instead of "piecing." This adds greater structural strength.) 
Vertical joints on opposite sides of partitions shall not come 
opposite each other on the same stud. 



Showing the Three Edges in which Gold Bond Gypsum Wallboard is made 




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Square Edge 



Square Edge 



Recessed Edge 



T. & G. Edge 



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GOLD BOND GRAIN BOARD 

All the Richness of Expensive Wood Paneling at a Fraction of 
the Cost . . . Three Finishes: Gumwood, Mahogany, Knotty Pine 



Gold Bond Grain Board is standard gypsum board with an 
imitation wood grain surface that defies detection upon casual 
inspection. Made in three distinctive finishes — Gumwood, Ma- 
hogany and Knotty Pine. 

In addition to its rich-looking grain surface, Gold Bond offers 
these important advantages over real wood: the solid gypsum 
core is fireproof and unaffected by dampness. Won't expand, 
contract, warp or peel. Saws like lumber and may be nailed 
without splitting. Installations made years ago, show not the 
slightest tendency toward fading. 

Where Used 

Millions of feet of Gold Bond Grain Board have been used 
in offices, stores, restaurants, taverns, living rooms and dining 
rooms in private homes, window backgrounds ... in fact, 
wherever an impressive wood panel effect is desired. 

For Summer Cottages and Recreation Rooms 

The low cost of Gold Bond Grain Board — only a fraction as 
much as real wood — permits its use for even low priced sum- 
mer cottages and recreation rooms. Besides offering a durable 
interior finish that is very unusual and beautiful, the cellular 
gypsum core provides effective insulation so much desired in 
summer homes. For basement recreation rooms, Gold Bond is 
strongly recommended ... it is not affected by cellar dampness 
and won't warp. 

Supplied With Lacquer Finish 

Made with a protective lacquer finish which can easily be 
cleaned with a damp cloth. No further decorative treatment 
is necessary, but like real wood, additional finishing will bring 
out its full richness. The simple instructions for further decora- 
tive treatment are given on the next page. 




Sturdy panels of Gold Bond Grain Board are nailed to the 
wood framing or, if modernizing, right over the old material. 
Old fashioned rooms with cracked walls and ceilings can be 
quickly converted into attractive up-to-the-minute interiors, 
and at surprisingly low cost. 

Thickness and Sizes 

Standard thickness, % in. (Special thickness, % and l/ 2 in -) 
Gumwood and Mahogany panels are made 32 in. wide and 8, 9, 
and 10 ft. long. Knotty Pine, 48 in. wide and 8, 9, and 10 ft. 
long. All panels are carefully wrapped, two to a bundle. 



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A beautiful room, delightfully different . . . Gold Bond Knotty Pine. 



60 



APPLICATION INSTRUCTIONS 
Nailing 

Gumwood and Mahogany (32 In. Wide) — Space studs 16 
in. on centers, using headers (extra 2x4's) where necessary to 
provide firm nailing surface behind the four edges of each panel. 
Nails should be spaced 3 in. apart and % in. in from edge of 
panel. On sidewalls only, it is not necessary to nail the center 
of the panel to the intermediate stud — this middle stud merely 
serving as a brace or support behind the center of the panel. 
Butt the panels together. Nail along the four edges, beginning 
at the center and working towards the top and bottom. 

Knotty Pine (48 In. Wide) — Follow above procedure except 
the panels must be nailed to the intermediate or middle studs 
as well as at the four edges. Do the intermediate nailing first 
beginning at the center of the panel and working towards the 
top and bottom. Use 4d finishing nails for the intermediate 
nailing driven at a 45 degree angle. Use care not to mark the 
board with the hammer. Intermediate nails should be driven 
just a trifle below the surface so the heads can be concealed 
with linseed oil putty mixed with stain. 

Nails — For new work, use 3d cement coated flat-head nails 
V/$ in. long around the edges. Over old material use 6d cement 
coated flat-head nails V/ 8 in. long. Drive the nails "home" but 
do not use a nail set. For intermediate nailing, use 4d finish- 
ing nails. 

Paneling 

Gold Bond Grain Board may be used with or without decora- 
tive mouldings over the joints. To obtain a well balanced pan- 
eled effect, it is well to prepare a plan in advance for the 
carpenter to follow. 

Or if a paneled effect is not desired, the Grain Board panels 
can be butted together so that the joints are hardly visible. 
For the latter treatment, finishing nails should be used around 
the edges instead of flat-head nails and the nailheads concealed 
with linseed oil putty mixed with stain. 

Decoration 

As Gold Bond Grain Board comes already lacquered, no 
further decoration is needed. May be cleaned by going over it 
lightly with a damp cloth. Like real wood, additional finishing 
will, of course, improve the richness. Always apply a priming 
coat of clear white shellac. Follow with a coat of clear (flat or 
dull) varnish or an emulsified floor wax. The dull varnish finish 
is particularly recommended. Rub down lightly between coats 
with steel wool. 




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A Close-up Showing the Distinctive Wood Graining 



Three Home Views Created by Joseph Piatt of Delineator Showing Treatments Obtainable with Gold Bond Grain Board 




Dining Room 



Recreation Room 



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GOLD BOND GYPSUM SHEATHING 

For Use Under Wood Siding, Clapboards, Brick-Veneer, Stone or 

Stucco . . . Full '/2-inch Thick . . . Fireproof Solid Gypsum Core 

Real Fire Protection for the Wood Frame Home 



Description 



GOLD BOND GYPSUM SHEATHING is a sturdy, 
knotlcss sheathing material, full l/ 2 i°- thick. The core 
is solid gypsum rock, encased in heavy, waterproofed build- 
ing paper with tongue and groove edges. Is rapidly be- 
coming the leading sheathing material because it offers these 
distinct advantages: 



Fireproof 

Water-resistant 

Windproof 

Helps insulate 

Adds structural strength 



Won't warp, expand or contract 
No building paper required 
Won't absorb moisture and freeze 
Saws like lumber 
Costs less . . . Saves labor 



Gold Bond Gypsum Sheathing is absolutely non-inflam- 
mable and incombustible. It insures permanent fire protec- 
tion for wood frame houses at no extra cost. Solid gypsum 
core resists water effectively and additional protection is 
provided by the heavy, waterproofed paper on both sides. 



Easier to Apply 

The large sturdy panels go up in no time- — an 8-ft. length 
covering a span of 6 studs spaced 16 in. on centers. Use 
10y 2 -gauge flat head roofing nails 1% in. long. 

Contractors report a further saving can be effected in 
applying the panels, by working from the inside of the 
house, thereby eliminating the usual outside scaffolding. 




WATERPROOFED 

BUILDING PAPER 

SURFACE 




Large, Sturdy Panels of Gold Bond Sheathing Go Up in No Time, an 8-Ft. 

Length Covering a Span of Six Studs Spaced 16 In. on Centers. No Random 

Lengths and No Waste. Building Paper Is Not Required. 



Gold Bond Sheathing, Full \k -In. Thick, with Core of Solid 

Gypsum Rock. Long Edges Are Tongue and Groove, Which 

Make Snug Windproof Joints. Ends Are Perfectly Square. 

Won't Warp or Buckle 

There is positively no movement in the 
panels regardless of climatic changes or ex- 
treme weather conditions. No possibility of 
shrinkage, leaving open gaps along the joints. 



Windproof . . . Helps Insulate 

The infiltration of hot or cold air is effec- 
tively stopped by Gold Bond Gypsum Sheath- 
ing. This can easily be appreciated when 
one considers: 

First — The wide panels (2 ft.) greatly re- 
duce the number of joints and these are 
permanently snug because of the tight-fitting 
tongue and groove edges. 

Second — The panels are knotless. No dan- 
ger of knots falling out after application, 
leaving holes for wind to enter. 

Size, Thickness, Weight 

Sizes: 2 ft. x 8 ft., 2 ft. x 6 ft. 8 in. 

Thickness: Full V2 inch. 

Weight: Approx. 1900 lbs. per M sq. ft. 

Edges { Long edfies T - and G ' 
b (Short edges square 

One thousand square feet actually covers 
one thousand square feet of surface. No 
random lengths and no waste. 



62 



GOLD BOND GYPSUM SHEATH I NG icnt-di 



Adds Structural Strength 

As indicated by the following chart, !/2 i ncn Gold Bond 
Sheathing adds greater structural strength to a building than 
other sheathing materials applied horizontally or diagonally. 

Comparative Structural Strength 

GYPSUM SHEATHING vs. WOOD SHEATHING 

Tests Made at Armour Institute of Technology 

(Test Panels 4'x8' . . . made of yellow pine 2x4' 's 

spaced 16" on centers) 



LOAD IN 


YELLOW PINE SHEATHING 
%" x 8" 


GYPSUM 
SHEATHING 


POUNDS 


Applied 
Diagonally 


Applied 
Horizontally 


Applied 
Horizontally 


100 

800 

2000 

2800 

3600 


Deflection in 
Inches 
.01 
.10 
.29 
.54 
1.07 


Deflection in 

Inches 

.10 

2.56 

10.94 

11.72 


Deflection in 
Inches 
.00 
.07 
.20 
.32 
.54 
.84 

4425 lbs. 






Load at 
end of test 


3925 lbs. 


3150 lbs. 




Builders everywhere are swinging over to this fireproof sheath- 
ing. Note the trim piles of Gold Bond in the foreground — 
absolutely uniform in size and thickness. No danger of "losing" 
them for kindling wood because they won't burn. 



(1) Sheathing and Roof Boards — Sheathing 
Boards shall be Gold Bond Gypsum Sheathing as manufactured 
by National Gypsum Company, V2 m - thick, 2 ft. wide, 8 ft. 
long (or 6 ft. 8 in. long). Nails shall be 1% in. long, No. 
IOV2 gauge, galvanized flat head roofing nails. Protect panels 
from the weather until ready for use. 

(2) Application — Apply panels of Gold Bond Sheathing 
directly to supports with lengths at right angles to the studding 
and rafters with groove edge down and trade-mark in. 

Wherever the square ends shall be butted together a support 
shall be provided and the tongue and groove sides shall be fitted 
tightly together. Stagger vertical joints. 

Panels shall be nailed to each intermediate support and at the 
ends, the nails to be spaced 4 in. apart and % in - m from edge 



Specifications 

and Roof at the ends 



Building paper 



(49 nails to each 2x8 ft. panel.) 
shall not be used over Gold Bond Sheathing. 

(3) Siding — Apply siding at right angles to studding, di- 
rectly over Gold Bond Sheathing, Siding shall be nailed into 
the wood supports (not to the sheathing) and nails shall be long 
enough to go through the sheathing and into the studs. 

(4) Shingles — Apply 1x2 in. wood furring strips over Gold 
Bond Sheathing at right angles to studding, to take shingle 
weathering specified. Furring strips to be nailed securely through 
the sheathing to the studding. 

(5) Stucco— Use 2.5 Gold Bond Self-Furring Diamond Mesh 
Lath Galvanized over the sheathing. Nail securely through 
sheathing to the wood framing. 

(6) Stone or Brick — Wall ties shall be nailed securely 
through the sheathing to the wood supports. 



Showing Gold Bond Gypsum Sheathing, Used with Various Types of Exterior Finish. 






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63 



GOLD BOND GYPSUM TILE BOARD 



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For Kitchens, Baths, Restaurants and Stores 

Large, Easily Applied Panels with Deep, Clean-cut Tile Indentations 

Costs Only a Fraction as Much as Ceramic Tile 



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Section of Gold Bond Tile Board Showing Embossed Tile Effect. Actual Size of Tile is 4 Inches Square 



GOLD BOND TILE BOARD is made under the same processes 
as Gold Bond Gypsum Wallboard except that the surface is 
indented to form tile, four inches square. Is fireproof; will not 
crack, expand or contract and takes a beautiful enameled finish. 
Gold Bond Tile Board is ideal for new and modernizing work 
and costs but a fraction as much as ceramic tile. Saws like 
lumber and can be applied quickly with little muss or dirt. 



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An Ideal Combination — Gold Bond Tile Board for the 
Wainscot and Standard Gold Bond Board decorated with 
Gold Bond Color Texture or Craftex for the upper walls and 
ceilings . . . Inexpensive . . . Permanent . . » Washable. 



Thickness and Sizes 

Panels are y 8 in. thick and supplied 4 ft. wide and 6, 7, 8, 
9 and 10 ft. long. In kitchens and baths of average size, one 
panel will extend the full length of the wall with no joints except 
at the corners where a quarter round mould is generally used. 

Application and Decoration 

Nail panels directly to wall studs or if remodeling, apply over 
present material. Use flat head nails along the edges, spaced 3 in. 
apart and % in. in from edge. Nails should be at least V/ & in. 
long or approximately 2 in. if used over old material. Panels 
must also be nailed to intermediate studs with finishing nails, 
these nails to be spaced 8 in. apart (or every two tiles from the 
top to the bottom of panel). Drive nails "home" but do not 
use a nail set. 

Apply a priming coat of varnish size. Then a coat of paint, 
followed with a second coat of paint or enamel. Rub down 
between coats with fine sandpaper or steel wool. 

Contrasting Colored Indentations 

Give surface a coat of flat paint or enamel underrating of the 
finished color desired for the indentations. Then apply a coat of 
enamel in some contrasting color, brushed on very thin. When 
enamel has set, wipe out the joints with any narrow tool such as 
a ruler, match, or ordinary meat skewer. It is advisable to stretch 
a piece of cloth over the end of the tool to absorb the enamel that 
is wiped out of the indentations, taking care to keep the cloth 
clean. This brings out the color of the base coat or underrating 
at the indentations and produces an attractive two-color job. 



64 



GOLD BOND HARDBOARDS 

Large Panels of Knotless, Grainless, Manufactured Lumber 

With or Without Tile Indentations . . . Five Thicknesses, Various Finishes 

Supplied in Standard Brown Color, also Black and Green 



GOLD BOND HARDBOARD is an all-wood product made 
of fibres obtained by exploding wood cbips by high steam 
pressure. Wood possesses a natural, powerful cementing material 
known as lignin. The exploded fibres and lignin are thoroughly 
felted together, and when placed in heated hydraulic presses are 
cemented together by the perfect adhesive present in wood itself. 
No foreign binder or chemical is used. 

Gold Bond Hardboard will not crack, split or splinter. Is 
highly compressed and extremely dense, hard and rigid. Saws 
like lumber; resists moisture and shows little expansion or con- 
traction. 

Used as a wall and ceiling material, for partitions, articles of 
furniture, table and counter tops, for all kinds of panel work, 
signs, cut-outs, window-backs, etc. 



Surface Finish, Color and Types 

One side is smooth and the other has a uniform texture. Either 
may be used as the face side. The natural color is a rich brown, 
which is very pleasing in itself, or any decoration may be used. 
Simply size with shellac or varnish size and decorate with paint, 
enamel, lacquer or texture. 

Gold Bond Hardboard is available in both tempered and un- 
tempered types. The tempered board is put through a special 
process which makes it even more dense, and harder than un- 
tempered board. 

Gold Bond Hardboard Tile 

Same as Tempered Hardboard except the surface has deep, 
clean-cut indentations to form tile, four inches square. Recom- 
mended for use in kitchens and baths, in stores, restaurants, etc. 
Because of its exceedingly hard surface, will stand plenty of 
wear and abuse. 



Gold Bond Panel Board 

An all-wood board, somewhat similar to Hardboard but not 
as dense and not nearly as hard. Incidentally, it costs about half 
as much. Supplied in two grades: Standard Panel Board and 
De Luxe Panel Board. The latter product is specially treated and 
has a denser and harder surface. 

Application 

Nail panels to wall studs and ceiling joists, or if remodeling, 
the panels may be applied over the present material. The center 
nailing over the intermediate studs should be done first and then 
the edges. Use finishing nails for the center nailing and regular 
flat head nails for the edges. Panels should be applied mod- 
erately close together but not forced into place. 

Thicknesses, Sizes, Weights, Bundling Data 





Sizes 


Weight per 


M sq. ft. 


No. 
Panels 

per 
Bundle 


Type and Thickness 










Untempered 


Tempered 


T 'n" Hardboard 


4'xl2' only 


610 lbs. 


650 lbs. 


8 


Vb" Hardboard 


4'x6', 8', 9', 10", 12' 


760 lbs. 


790 lbs. 


6 


ft" Hardboard 


4'x6', 8', 9', 10', 12' 


1040 lbs. 


1100 lbs. 


6 


V4" Hardboard 


4'xl2' only 


1370 lbs. 


1400 lbs. 


3 


-,V' Hardboard 


4'xl2' only 


1710 lbs. 


1630 lbs. 


3 


Vs" Hardboard Tile 


4'xl2' only 




830 lbs. 


6 


A" Hardboard Tile 


4'xl2' only 




1130 lbs. 


5 


V4 " Panel Board 


4'x5', 6', 7', 8', 9' 










10', 12' 


860 lbs. 




6 


Vi" DeLuxe Panel Bd. 


4'x6', 8', 9'. 10'. 12' 


1060 lbs. 




6 



The above table covers only standard brown color board. . . . Black and 
Green Tempered Hardboard is made 1/10", Vs", i J u", Y4", f s " thick and 
in one size 4' x 12' . . . Hardboard Flooring is made in two sizes, 
liy 4 " x 23y 2 " and 23V2" x 47". 

Note: "Shorts," used extensively for manufacturing purposes, are avail- 
able in Va" and tV Hardboards and Yt" Panel Board and De Luxe Panel 
Board at lower prices. Sizes 4' x 2', 3' and 4'. . . . Packed 10 pes. to bdle. 



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}>s" Hardboard 
Tempered 



tV Hardboard 
Untempered 



?4 " De Luxe 
Panel Board 



-iV Hardboard 
Tile 



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A CHAIN OF 15 MAMMOTH GOLD BOND PLANTS 
INSURES QUICK SERVICE TO 10,000 DEALERS 

Uniform High Quality Is Insured by Constant Supervision 
from the Time the Raw Materials Are Taken from the 
Mines Until the Finished Products Are Loaded in the Cars. 





Lime Mine at York, Pa. This limestone is 
exceptionally high in calcium oxide content. 



Loading methods approved by the carrier insure contents 
reaching customers in perfect condition. 



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Clarence Center Plant Located in the Heart of Western New York's Rich Gypsum Deposit. 



66 





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FOUR 



GOLD BOND 




INSULATION 
PRODUCTS 

Pages 68-78 

FIBRE INSULATION BOARD 

PLANK AND TILE 

LOW DENSITY TILE 

FIBRE INSULATION SHEATHING 

FIBRE INSULATION LATH 

Page 79 

GYPSUM WALLBOARD and LATH 

With Aluminum Foil Insulation 

Pages 80-81 
ROCK WOOL PRODUCTS 

Page 82 
DRY FILL INSULATION 



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NEW BEAUTY FOR ALL KINDS OF INTERIORS 
WITH GOLD BOND INSULATION BOARD 




Congress Cafe, Lima, Ohio. . . A Modernized Restaurant, Smart and Inviting. Here, the Ceiling of Gold Bond Low Density 
Insulation Tile Serves a Triple Purpose . . Decorates . . Quiets Noise Like Magic . . Insulates. Owner Reports the Insulated 

Ceiling Cuts the Cost of Air-Cooling Almost One-Third. 




Marlow Theatre, Herrin, III. . . A black and white picture doesn't do justice to these charming walls and ceiling of Gold 
Bond Insulation Board and Tile. And there is the practical side too . . both the heating and cooling systems will function 

better and at reduced cost in this insulated building. 

68 







'WSBUIW ' 








Gold JJotld SETS NEW STANDARDS 



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TILE 



• With a few pane' 8 °f Gold Bond Insula lion Board, you 
can turn an ordinary bedroom into a stylish modern in- 
terior like this. Note that here the board is applied horizon- 
tally and grooved — a method favored by many leading 
designers. On the ceiling, Gold Bond Insulation Tile. 



• Cheerful surroundings help put customers in the buying 
mood. That's why so many store owners are modernizing 
with colorful Gold Bond Insulation Board. Besides deco- 
rating, it quiets noise and during the summer keeps the 
store decidedly cooler ... all at one low cost. 








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TILE 



ALTERNATE TEXTURE AND SANDED 
/ VARIEGATED BLENDS 



Low Density TILE 



BRUSHED SURFACE 
IN TWO-TONE CREAM 
/ 



• Like a room in a millionaire's penthouse apartment, but 
still well within the average modernizing budget. Gold 
Bond Insulation Tile on the walls, textured and sanded 
finish alternated. The tUe colors are dyed in the fibre — no 
paint required. 



• Ceilings of Gold Bond Low Density Tile hush clack and 
clatter like magic. Recommended for office, stores, res- 
taurants, music rooms. On modernizing jobs, the tiles are 
applied right over the old material in jig time without 
interruption to business. 





f~^ OLD BOND brings you a new and basically im- 
^^proved insulation board . . . the most beautiful 
material of its kind America has ever seen. 

Made by secret "Multi-Seal" process, this unique 
board combines the fibres of three selected "live" 
woods. Cottonwood for strength. Bav for formation 
and appearance. Pine for permanence. No make- 
shift or waste materials are used. 

The fibres are moisture-proofed, dyed and blended 
to form a board with rich, permanent color through- 
out its entire structure ... a board with new high 
resistance to expansion and warp- 
ing ... a board that brings lifelong 
beauty to any room. 

DISTINCTIVE NEW COLORS 
AND SURFACE FINISHES 

You can have Plank, Tile or 
Panel effects with three hand- 
some surface finishes to choose 



Unicjue New Insulation Board 




from . . . Fine Mat, Texture or Sanded. In addition 
to standard Cream Color, Tile and Plank come in 
Variegated Blends of Tan, Gray, Cream, Indian Buff. 
Grouping these tints in random style, harmonious 
color combinations are created without further cost 
for decoration. Special grooved designs are easy, too. 
This hardy board cuts as clean as a whistle. 

DOES 4 JOBS AT ONE LOW COST 

Here's a material that decorates as it builds and 
insulates against summer heat and winter cold . . . 
absorbs sound and cuts room-to- 
room noise ... all at one low cost. 
Do not fail to get all these wall 
and ceiling features when you 
build or remodel. Specify Gold 
Bond. Full description of the va- 
rious boards on back page. Your 
dealer will gladly show you full 
size panels right from stock. 



Combines 3 'Live' Wood Fibres 




• You can put lasting life and color into any type of room 
with Gold Bond Insulation Plank. Here you see it in tex- 
ture finish, applied random width style in variegated 
hlends. Standard Gold Bond Insulation Board below the 
chair rail and on the ceiling. 



D FINISH 
ED BLENDS 



• One of the best advertisements a firm cau have is a 
good-looking, up-to-date office. This one has a ceiling of 
Gold Bond Insulation Tile. Walls are texture surfaced 
Gold Bond Insulation Board panels with edges beveled 
and a decorative groove six inches in from the edge. 




NEW GOLD BOND INSULATION BOARDS 
...a complete line made by "MULTI-SEAL" process 



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Builds, decorates, insulates and deadens noise, all at one 
low cost. And does each job better due to the use of "live" 
wood fibres combined by Gold Bond's exclusive "Multi- 
Seal" Process. Choice of three standard surface finishes: 
Fine Mat, Sanded and Texture ... all in Cream Color. 
Square edges . . . Thicknesses: l/ 2 ", %", 1", ll/ 2 ", 2" 
. . . Sizes: 4'x4', 6\ 7', 8', 9\ 9y 2 ', 10', 12', 14', 16'. 



Smart new wall and ceiling effects are easy to obtain 
with Gold Bond Insulation Tile. Can either be nailed in 
place or applied with Gold Bond Adhesive. Half-inch 
Tile is furnished in Fine Mat, Texture or Sanded Finish 
in Cream Color; and either Texture or Sanded Finish 
in Variegated Blends of Cream, Tan, Indian Buff and 
Gray. One-inch thickness in Fine Mat Finish, Cream 
Color only. Sizes: 12"xl2", 12"x24", 16"xl6", 16"x32", 
16"x48", 18"x48", 24"x24", 24"x48". Beveled, V-Lap 
edges on four sides. 



Insulate as you build with this new, improved plaster 
base. Keeps your house more uniformly warm in winter, 
at lower fuel expense . . . and many degrees cooler in 
summer. The sturdy 18" x 48" panels are applied quick- 
er than wood lath . . . add greater strength to the 
walls and ceilings. Interlocking edges beveled to insure 
extra plaster thickness at all joints. Made in yj' '•> %" 
or 1" thickness. Supplied with metal reinforcing at no 
extra cost. 

EXTERIOR SHEATHING 

At no greater cost than old style wood sheathing, this 
rugged new board provides maximum insulation . . . 
plus tremendous bracing strength. Made from insulat- 
ing wood fibres waterproofed by "Multi-Seal" process. 
Coated with asphalt for still further moisture protec- 
tion. Then painted aluminum all over, to insulate by 
reflection against radiant heat. Supplied in two styles: 
Square edges on four sides, in sizes 4' x 7', 8', S 1 /^', 9', 
9*4', 10' and 12' . . . Shiplap edges on long sides and 
ends square, in one size, 2' x 8'. 



LOW DENSITY TILE 

Here — at no extra cost — is a half-inch, low density, 
insulation tile with greater sound absorption than 
standard tile. Light in weight, porous, yet strong and 
wear-resisting. Brushed surface in cream color with 
beveled, butt edges. Supplied y 2 " thick in all the 
above standard tile sizes. Also 1" thick in 12" x 12", 
12"x24" and 16" x 16". 



PLANK 

Same beautiful surface finishes as Gold Bond Insulation 
Tile. Cream and Variegated Blends. Long sides have 
beveled V-Lap edges; ends square. Available with or 
without decorative bead. Widths: 6", 8", 10", 12", 16". 
Lengths: 6', 8', 9', 10', 12' . . . i/ 2 " thick. 



ROOF BOARD 

Since heat rises, roof insulation is mighty important 
from a fuel standpoint. So build with Gold Bond Roof 
Board. It saves its own cost in a short time, then pays 
dividends for the life of the building. Supplied in 
22" x 47"" panels y 2 " thick with square edges. Thick- 
nesses of 1", 11,4", and 2" come with either square 
edges or offset. 

COLD STORAGE BOARD. Gold Bond makes Cold 
Storage Board in a full range of standard sizes and 
thicknesses. Ask your dealer for details. 



ACCESSORIES 

Full hue of mouldings made of Gold Bond Insulation 
Board (Sanded Finish) including Decorative Strips, 
Corner Moulds, Frieze Bands and Ornaments , . . also 
Gold Bond Adhesive, a cement which bonds instantly. 



NATIONAL GYPSUM COMPANY, 



N . Y . 



NEW YORK CITY 
KANSAS CITY 



BOSTON 
DALLAS 



PHILADELPHIA 
MINNEAPOLIS 



BALTIMORE 
ST. LOUIS 



CHICAGO 
ATLANTA 



GOLD BOND LOW DENSITY INSULATION TILE 

A Beautiful Fibre Insulation Tile with Greater Sound Absorption Than Standard 
Insulation Tile ... at No Higher Cost. Full j/2 in. Thick 

A Three-in-one Product . . . Decorates . . . Quiets Noise . . . Insulates 




HERE ... at no extra cost ... is a special J/2 inch tile with 
greater insulation and noise absorption than standard insula- 
tion tile of the same thickness. These plus advantages are brought 
about through a special fabrication process which produces a tile 
that is exceptionally porous, yet rigid and tough. 

Gold Bond Low Density Tile is ideally suited for ceilings and 
upper wall panels in restaurants, offices, cocktail lounges, bowling 
alleys, roller skating rinks; in fact for any type of building where 
noise quieting is desirable. 

Owners of restaurants and cafeterias have simply marveled at 
the vast difference a ceiling of this noise quieting tile will make. 
The slam, bang, clashing of dishes is hushed like magic, resulting 
in greater patronage as folks will really go out of their way to 
find a quiet eating place. Besides reducing noise, this low cost 
tile also decorates and insulates, all in one operation. 

Easy Installation . . . Requires No Decoration 

Gold Bond Low Density Tile is quickly applied with nails or 
Gold Bond Adhesive, generally right over the old material. On 
many store jobs, the work is done after hours without interrup- 
tion to business. The attractive brushed surface in light cream 
color provides high light reflection and requires no further decora- 
tion. However, if special colors are desired the surface may be 
decorated with Gold Bond Casein Paint or Sunflex with little or 
no sacrifice of sound absorption. 

Size and Thickness 

Made J/2 m - thick in the following sizes which permit an end- 
less number of patterns: 12x12, 12x24, 16 x 16, 16x32, 
16x48, 18x48, 24x24, 24x48 in. Brushed surface with 
beveled butt edges all around. Also made 1 in. thick in three 
sizes: 12 x 12, 16 x 16, 12 x 24 in. 



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Ugly, old-fashioned ceilings are modernized like magic with this low cost tile, built to hush noise. Many store jobs are done after 

hours without interruption to business. 



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GOLD BOND FIBRE INSULATION SHEATHING 

"Weather-Conditions" New Homes Against Heat, Cold, Moisture 
. . . Adds Tremendous Bracing Strength to Framing 



RJiODERN standards of comfort demand a "weather-con- 
"' ditioned" house. A house that's cooler in summer, easier 
to heat in winter. A house more healthful to live in . . . with 
outside walls so tight and weatherproof that dampness can't seep 
through. 

Insulation Sheathing provides this valuable extra protection at 
no higher cost than ordinary wood sheathing. It's just like get- 
ting insulation free! 



The Newest in Insulation Sheathing 

Any Insulation Sheathing is a big improvement over wood 
sheathing but now . . . Gold Bond presents a new sheathing 
with two kinds of insulation: 

(1) Insulation against conducted heat, made possible by millions 
of tiny air cells within the board. (Like a wool overcoat 
preventing escape of body heat.) 

(2) Reflective insulation to retard radiant heat. (Like the shiny 
inner walls of a thermos bottle.) Gold Bond accomplishes 
this with a generous coat of aluminum paint over the entire 
board. 

With both these kinds of insulation you will find it far easier 
and less costly to keep your house at a warm, even temperature 
all winter long. And you'll get a real thrill out of cooler, more 
comfortable rooms no matter how hot it gets in summer. 



Full §| in. thick. Two styles: Square 
edges as illustrated or shiplap 
edges on long sides. 






' 




The large sturdy panels of Gold Bond Sheathing are applied 
in less time and add structural strength to the building besides 
providing the most important improvement that can be built 
into new homes , . . Insulation. 

Made of Sturdy Wood Fibre 

Three "live" Southern Woods are used exclusively in the 
manufacture of Gold Bond Insulation Sheathing . . . Cottonwood 
for strength, Bay for formation, Pine for permanence. No dead- 
wood, no waste materials are used. The fibres of all three woods 
are skillfully blended by Gold Bond's "Multi-Seal" process and 
fabricated into large sturdy panels with outstanding strength and 
insulation value. A heavy coating of asphalt "under the alumi- 
num finish" provides additional protection against moisture. 

Greater Structural Strength 

Actual tests prove conclusively that Gold Bond Insulation 
Sheathing adds greater bracing strength to the structure than 
wood sheathing applied either horizontally or diagonally. The 
large panels save time in application and provide better wind 
stoppage because there are fewer joints. And no knot holes to 
permit infiltration of hot or cold air. 

Sizes and Thicknesses 

Gold Bond Fibre Insulation Sheathing is full II in. thick and 
supplied in two styles as follows: 

Styles Sizes 

Square Edges on 4 ft. x 7, 8, 8Y 2 , 9, 9 l /2, 



four sides 

Shiplap Edges long 
sides. Ends square 



10, 12 ft. 
One size, 2 ft. x 8 ft. 



Wrapped 
4 panels 
per bdle. 

4 panels 
per bdle. 



GOLD BOND INSULATION ROOF BOARDS 

Gold Bond Insulation Roof Boards are also made from rugged 
"Multi-Seal" processed wood fibre and supplied in 22x47 in. 
panels V2 in. thick with square edges. Thicknesses of 1, l 1 /^ 
and 2 in. are made with either square edges or offset. 



76 



GOLD BOND SHEATHING PROVIDES THE GREATEST IMPROVEMENT THAT 
CAN BE BUILT INTO NEW HOMES . . . Insulation for the life of the building 

SPECIFICATIONS 



Scope of Work 
Gold Bond Insulation Sheathing shall be used in the following 
locations: (list) 

Framing 
Framing shall be spaced 16 inches on centers. 

Material 

1. Sheathing shall be as manufactured by National Gypsum 
Company and delivered on the job in original wrapping. Boards 
shall be §f inch thick and selected from these sizes: 4 feet by 
7, 8, 8 1/ 2 , 9, 9V2, 10 or 12 feet with Square Edges, or 2 ft. x 8 ft. 
with Shiplap Edges. 

2. Common 8d nails shall be used. 

Application 

1. All exterior walls as specified shall be covered with Gold 
Bond Insulation Sheathing. 




These rugged 2' x 8' panels with Shiplap Edges sheath and insulate in one operation. No 
cracks, no knotholes, no random lengths, no waste. 



2. Panels (4 ft. wide with square edges) shall be applied 
vertically with ribbed surface facing studs . . . Panels (2 ft. 
wide with Shiplap Edges) shall be applied at right angles to 
studding with ribbed surface facing studs. 

3. Panels shall be nailed to intermediate studs first, with nails 
spaced 6 inches apart on centers, then along edges 3 inches apart 
and not less than y 8 inch in from edge. 

4. All joints shall center on framing members. Where neces- 
sary, headers shall be cut between framing members to provide a 
nailing base for all edges of sheathing panels. 

5. Square Edge panels shall be spaced l/ 8 inch apart at inter- 
sections, but brought into close contact with door and window 
frames . . . Shiplap Edge panels shall be fitted moderately close 
together. Ends spaced y s inch apart. 

6. Boards shall cover completely from silts to plates. 



Supplementary Provisions 



Note; No building paper required except 
wider exterior stucco. 

1. WOOD SIDING— All 
joints shall center over framing 
members, and nails shall be long 
enough to pass through the sheath- 
ing and penetrate the stud at least 
1 inch. 

2. SHINGLES— Furring strips 
of 1 by 2-inch size shall be applied 
at right angles to framing members, 
over the Gold Bond Insulation 
Sheathing. Nails shall be long 
enough to penetrate at least 1 inch 
into framing. 

3. METAL WORK— A 1-inch 
thick wood nailing base shall be 
applied over sheathing wherever 
metal gutter aprons, valleys, hips, 
ridges, saddles, etc., are to be placed. 

4. EXTERIOR STUCCO— 

All head casings over windows and 
doors shall be flashed with metal. 
Sheathing shall be covered com- 
pletely with waterproof building 
paper. Self-furring stucco bases, 
such as expanded metal lath, shall 
be applied directly over sheathing 
and building paper, so that nails or 
staples shall penetrate framing at 
least one inch. Non-furring stucco 
bases shall be nailed to 1 by 2-inch 
wood furring strips applied verti- 
cally to each stud over the sheathing 
and building paper. 

5. MASONRY VENEER— 

Metal ties for masonry veneer shall 
be attached over sheathing with 
nails that penetrate framing mem- 
bers 1 inch or more. At least V2 
inch space shall be left between 
sheathing and back of veneer. 



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GOLD BOND FIBRE INSULATION LATH 

Does Three Jobs . . . Builds a Stronger Plaster Base 

Provides Effective Insulation . . . Cuts Room-to-Room Noise 

Supplied with or without Metal Reinforced Edge 



BUILDING a new house these days without insulation is like 
designing a new car with two wheel brakes. It's years be- 
hind the times. 

Today, prospective buyers of new homes demand insulation and 
for very good reasons. An insulated home means greater comfort 
the year 'round. Rooms are 10 to 15 degrees cooler in summer, 
easier to heat in winter with fuel bills cut as much as 40%. Insu- 
lation is not a luxury. It's real economy because it pays for itself 
many times over. And it steps up the value of the property so 
that it will always bring a higher resale price. 

Gold Bond Fibre Insulation Lath does a thorough job of insu- 
lating. Made of the same selected wood fibre as Gold Bond 
Insulation Board, fabricated into sturdy panels by exclusive 
"Multi-Seal" Process for greater strength and resistance to mois- 
ture. It's easy to appreciate how much quicker these 18 x 48 in. 
panels of Gold Bond Insulation are applied than old-fashioned 
narrow strips of wood lath. And here's another saving . . . all 
plaster goes on the surface of the lath. None is wasted between 
the lath to form "keys" as with wood lath. 

Size and Thicknesses 

Gold Bond Fibre Insulation Lath is made in one size, 18 in. 
x 48 in. In addition to the standard thickness of V2 in '> IS als o 
made in special thicknesses of % 
in. and 1 in. As illustrated below, 
all panels have special V-Lap 
edge on long sides for snug 
fit ... . and beveled edges 
all around which insure ex- 
tra plaster thickness over all 
joints. Supplied with or 
without metal reinforced 
edge. 



V-LAP EDGE FOR 
SNUG JOINT 




Specifications 



1. Scope of Work 

List areas to be covered. (If standard x /z in. Gold Bond Insula- 
tion Lath is to be used for all partitions and % in. or 1 in. thickness 
for exterior walls, list specifically the areas where each thickness is to 
be used.) 

2. Framing 

Space studs, joists or furring strips 16 in. {or 12 in.) on centers. 
Where necessary, use extra 2 x 4 in, headers. 

3. Material 

Lath shall be standard Gold Bond Fibre Insulation Lath (or with 
Metal Reinforced Edge) as manufactured by National Gypsum Com- 
pany and delivered to job in original wrapped bundles. Panels shall 
be 18 in. x 48 in. x i/i in. thick (or % in. or 1 in. thick as specified 
above). 

4. Application 

4-1. General. Do not wet lath either before or after application. 
Apply panels at right angles to framing members with beveled edges 
exposed. The groove edge of panels shall be down . . . with V-Lap 
edges fitted moderately close together and ends spaced '/4 in. apart. 
All end joints shall butt over framing members. Stagger vertical 
joints on walls . . . stagger joints where walls and ceiling meet 
. . . stagger horizontal joints at corners. (If lath with metal rein- 
forced edge is used, the metal strips require no nails.) 
4-2. Nailing. Use l'/g in. blued lath nails with ft in, head for i/ 2 
in. lath. Use 1% in. blued lath nails with ft in. head for % in. or 
1 in. lath. ... 16 nails to each 18 x 48 in panel . . . four nails to 
each stud. Space nails 5% in. apart and % in. in from bevel edge. 
Do intermediate nailing first, then edges. 

4-3. Corner Treatment. Reinforce all internal corners with Gold 
Bond 3 in. Cornerite including corners where walls and ceilings meet. 
Reinforce all exterior corners with Gold Bond Corner Bead (specify 
type). 

5. Plastering 

5-1. Base Plaster. Gold Bond Hair Fibred Gypsum Plaster (or Gold 
Bond Wood Fibred Gypsum Plaster) shall be used. 
5-2. Application. Apply plaster in three coats in accordance with 
manufacturer's instructions. It is of utmost importance that plaster 
be applied full i/ 2 in. thick. To insure uniform thickness, screeds 
shall be used, particularly on large areas. 




The metal reinforcing is uniformly spaced so as not to "hit" 
on studs or interfere with nailing or cutting. V-Lap edge on 
long sides and beveled all around for extra plaster thickness. 
The large panels are applied much quicker than old style lath. 



Plastering moves along faster over this smooth base. The 
metal reinforcing becomes imbedded in the plaster which 
provides extra strength over continuous joints and inci- 
dentally insures a uniformly thick plaster coat. 



78 



GOLD BOND GYPSUM WALLBOARD AND LATH 
WITH ALUMINUM FOIL INSULATION 

Combines Reflective Insulation with Fireproof Gypsum Wallboard and Lath, 
Providing Maximum Home Insulation at a Fraction of the Normal Cost 

SCIENTISTS have established the fact that heat waves like 
light tcaves are reflected by a polished metal surface. This 
accounts for the introduction of aluminum foil as an insulating 
material and so conclusively has it proved its superiority over 
other types, that it was quickly adopted by the United States 
Navy, leading railroads and steamship lines, and manufacturers 
of refrigeration equipment. 

When insulation for homes became so popular a few years 
ago, National Gypsum Company was quick to see the great possi- 
bilities for aluminum foil because of its effectiveness as an insula- 
tor plus its low cost. However, they went a step further and 
combined this insulating metal with fireproof gypsum lath by 
Jaminating a tissue-thin sheet of pure aluminum foil on the 
reverse side of the lath panels. This produced a 2 in 1 product, 
namely a superior plaster base with high insulation value. In 
the same way, gypsum wallboard was treated, thereby producing 
an insulation wallboard. Both products are illustrated below. 

In a new home of average size the use of Gold Bond Gypsum 
Lath with aluminum foil increases the cost but a trifle because 
it is used only for the outside walls (facing the sheathing) and 
for the second floor ceiling. For all inside partitions, standard 
or plain Gold Bond Gypsum Lath is used. (The latter product 
is described in Section One. ... see page 14.) 

Provides Year Round Insulation 

Actual tests prove that aluminum foil will reflect 95% of tl\ 
radiant heat. With foil lath for the outside walls and the second 
floor ceiling, a barrier of this metal insulation is built around the 
house which turns back summer heat, keeping the home 10 to 
20 degrees cooler than the temperature outdoors. In winter, it 
prevents the escape of furnace heat and often saves from S40 
to $100 in fuel bills during one heating season. Caution: Foil 
lath must be applied with the metal side facing the framing 
members, or in other words next to an air space. 

Permanency 

Repeated tests of aluminum foil over a period of years fail to 
disclose any decline in its effectiveness, as an insulator. This is 
explained by the fact that a protective oxide coating forms on 
aluminum, which in no way affects its reflective quality, but 
prevents corrosion even in the vicinity of large steel mills where 
the air is loaded with corrosive sulphur fumes. 



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Mirrored Surface Reflects Heat Waves 

This modern product — a combined plaster base and an insulator — costs 
but a trifle more than plain gypsum lath. Saves the cost and labor expense 
of installing a separate insulation material. 

Sizes and Thicknesses 

GOLD BOND ALUMINUM FOIL INSULATION 
% and y 2 in. thick. 16 x 32 and 16 x 48 in. 

GOLD BOND ALUMINUM FOIL INSULATION BOARD 



a 
in 



Thickness 

Vt, %. Vz in- Sq. Edge 

3 /s» Vi ' n > Recessed Edge 

1/2 in. T. & G. Edge 




Lengths 

6, 7, 8, 9, 10, 11, 12 ft. 

6, 7, 8, 9, 10, 11, 12 ft. 

8, 9, 10 ft. 




Showing the Front and Aluminum Foil-Covered Back of Gold Bond Aluminum Foil Insulation Lath and Wallboard- 



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GOLD BOND ROCK WOOL INSULATION 

A Complete Line of Fireproof Rock Woo! Products for Home Insulation 
Wall Thickness and 2-inch Batts, Loose and Granulated Rock Wool 

^^OLD BOND Rock Wool embodies all the requisites of ideal 
^^ insulation for homes. In addition to its effectiveness as an 
insulator, it is fireproof, lightweight, verminproof, moisture re- 
sistant and absolutely permanent. 

Made of selected minerals which are reduced to a molten state 
under terrific heat and blown into long, silky fibres by steam. 
The fibres are then interlaced by special process to give the 
material strength and resiliency and to provide millions of tiny 
dead air insulating pockets. When the finished product is exam- 
ined, it is hard to believe that this downy blanket of insulation 
was once stone. 



Provides Year 'Round Insulation 

Gold Bond Rock Wool xs recommended for the exterior walls 
and under the attic floor or between the roof rafters. This builds 
a blanket of insulation around the house that prevents furnace 
heat from escaping and makes it easy to keep the entire house at 
an even temperature. Savings in fuel run as high as 40%. 

In summer, this barrier of insulation is equally effective in 
keeping out the warm heat of the sun. Step into the attic of a 
non-insulated house on a hot, sultry day and it's like walking 
into an oven. Much of this heat finds its way to the sleeping 
rooms on the second floor making them unbearably warm and 
stuffy. Gold Bond Rock Wool prevents this heat from seeping 
through and the entire house is kept from 10 to 15° cooler. 



Advantages of the Fibre-Skin Liner 

As indicated below, Gold Bond Rock Wool Batts are supplied 
with or without the Fibre-Skin Liner, pictured at right. Tbis is 
a tough, waterproofed membrane to which the batts are cemented. 
Provides effective wind-stoppage plus additional protection against 
moisture. An overlap on all four sides serves as a handy nailing 
surface and speeds application. 

Styles and Thicknesses 

STANDARD ROCK WOOL BATTS 

15" x 48" x Wall Thickness Supplied only with Fibre-Skin Liner 
15" x 23" x Wall Thickness With or Without Fibre-Skin Liner 




15"x48" 2" Thickness 
15"x23" 2" Thickness 



Supplied only with Fibre-Skin Liner 
With or Without Fibre-Skin Liner 



HANDI-BATTS 
8" x 15" x Wall Thickness Without Fibre-Skin Liner 



BAG GOODS 

Gold Bond Loose Rock Wool 
Gold Bond Granulated Rock Wool 



35 lb. bags 
35 lb. 



Wall Thickness Batts fit snugly between studs and joists, 
building a blanket of insulation around the house. An 
overlap of the Fibre-Skin Liner on all sides provides a 
handy nailing surface. 



Color, Conductivity and Density 

All Gold Bond Rock Wool Products are white in color. Ther- 
mal conductivity is .254 B.t.u. per hour, per square foot, per inch 
thickness, per degree Fahrenheit temperature difference. When 
installed in the recommended wall thickness, it is eight to ten 
times more effective as an insulator than fibre insulation board 
of the usual y 2 inch thickness. 

Gold Bond Rock Wool is unusually dense, the weight run- 
ning from 5 to 6 lbs. per cubic foot. This extra density means 
more fibres and accordingly, more voids or insulating air 
pockets. (The highest insulating efficiency of mineral fibre in- 
sulation is approximately 5 lbs. per cubic foot.) 



80 



Fireproof, Water-resistant, Sanitary 

Gold Bond Rock Wool is absolutely fireproof — as fireproof as 
the minerals from which it 
is made . . . Effectively 
protected from dampness by 
a new process of actually 
coating the fibres with water- 
proofing material. Additional 
protection against moisture 
is provided by the water- 
proofed Fibre-Skin Liner . . . 
An all-mineral product Gold 
Bond Rock Wool is vermin- 
proof and contains nothing 
to attract rodents of any 
kind. Rats will not nest in it. 




Specifications 

Scope— Gold Bond Rock Wool Insulation shall be installed 
between studs of exterior walls and between joists under attic 
flooring (or between roof rafters). 

Materials — Insulation shall be Gold Bond Rock Wool Insula- 
tion (specify type and thickness) of National Gypsum Company, 
Buffalo, N. Y., and delivered to job in the original containers. 



Gold Bond is absolutely fire- 
proof. Withstands the piercing 
flame of a blow-torch with no 
ill effects except a slight dis- 
coloration. 



Permanent 



Will Not Settle 



Gold Bond Rock Wool will not decompose, corrode or de- 
teriorate in any way. Is absolutely permanent and will outlast 
the building in which it is used. Tests have been made of Rock 
Wool installations made forty years ago and the material was 
always found to be in perfect condition and providing the same 
efficient insulation as when first used. Is resilient and will not 
settle with age or from vibration. 




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Loose Rock Wool and Granulated Rock Wool 
Loose Rock Wool is soft and fluffy and easily installed by 
hand to the desired thickness . . . Granulated Rock Wool 
is simply poured from the bag. Both products are moisture- 
proofed and absolutely fireproof. Supplied in 35-lb. bags. 




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Gold Bond Rock Wool Handi-Batts 
Supplied in one size 8" x 15" x Wall Thickness, packed 30 in carton. A high quality, inexpensive type of moisture-proofed 
batt without the Fibre-Skin Liner. Easy to handle . . . quickly installed ... fits snugly between studs and joists. 



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GOLD BOND DRY FILL INSULATION 

A High-grade Gypsum Insulation Product Easily Installed in New or Old Homes 
Provides Efficient Insulation at Low Cost . . . Fireproof 



GOLD BOND DRY FILL INSULATION is composed chiefly 
of finely ground high grade gypsum and fibres. It is used 
dry between the ceiling joists and between the studs forming the 
exterior walls. 

This barrier of insulation around the house provides addi- 
tional comfort the year 'round and pays for itself many times 
over in the saving of fuel during the heating season. Keeps the 
entire home many degrees cooler in Summer and makes it easier 
to heat in Winter. 

For buildings already built, it is generally possible to apply 
the insulating over the second story by removing every fifth board 
of attic floor where a single floor is used. If attic space is not 
floored over, the insulating is simple. 

Made from Fireproof Gypsum 

Gold Bond Insulation is made from the same high grade gyp- 
sum as all other Gold Bond Products. Gypsum itself has good 
insulating qualities and these are increased by a special fluffing 
process. This process increases the number of tiny air cells which 
k naturally contains and by doing so the insulating value is in- 
creased. The fluffing also increases the bulk, reduces its weight 
and minimizes any settling tendencies. 

Its Advantages 

1 — An efficient insulation against heat, cold and sound. 

2- — It is an inert mineral product; absolutely fireproof. 

3 — Applied 3 to 4 in. thick, its cost is extremely low. 

4 — It weighs only 18-20 lbs. per cu. ft. 

5 — 420 lbs. covers 100 sq. ft. ceiling area, applied 3 in. thick, 

6 — Easy to handle. Packed in 50-lb. bags. 

7 — Soaking will not injure the insulation after it dries out. 




;>%, 





Gold Bond Dry Fill Insulation is poured between ceiling 

joists and exterior wall studs, building a blanket 

of insulation around the house. 

High Insulation Value 

Gold Bond Dry Fill has a coefficient thermal conductivity 
comparable with that of fibre insulation board. When installed 
3 to 4 in. thick, or 6 to 8 times the thickness of 1^-io. thick 
insulation boards, it has a minimum of over 5 times their insu- 
lation value. 



SPECIFICATIONS FOR GOLD BOND DRY FILL INSULATION 






Scope of Work 



All outside walls and attic floor shall be insulated with Gold 
Bond Dry Fill Insulation. 

Material 

Insulating material shall be Gold Bond Dry Fill Insulation as 
manufactured by National Gypsum Company, Buffalo, N. Y. 
It shall be delivered to the job in manufacturer's original 50 lb. 
bags and shall be used directly from the bags. 

Side Wall Insulation 

The entire space between the plaster base or lath and the out- 
side sheathing of all exterior frame walls shall be filled with 
Gold Bond Dry Fill Insulation from the sill to the underside of 
the roof plate. 



The Insulation shall be left in its original fluffy state and not 
packed into position. 

After the outside sheathing is in place and the walls to be in- 
sulated are receiving plaster base or lath, Gold Bond Insulation 
shall be poured into place in sections not over 48 in. in height 
at a time as the work of applying the plaster base or lath pro- 
gresses. 

Ceiling Insulation 

If gypsum lath is used for the second floor ceiling, Gold Bond 
Dry Fill Insulation may be installed as soon as the lath is in 
place. Pour from the bags to a depth of not less than 3 nor 
more than 4 inches. Sprinkle lightly with water to form a crust. 
If ceiling is lathed with wood or metal lath, then the insu- 
lation shall not be filled in until after the plaster is thoroughly 
dry. 

Note for Carpenter: If the attic is to be floored, the floor must not be 
laid until the Gold Bond Insulation has been filled between the joists. 



82 






SECTION FIVE 



SOUND CONTROL 
PRODUCTS 



Pages 84-85 
ACOUSTIMETAL 

Page 86 
ACOUSTEX 

Page 87 
ECONACOUSTIC 

Pages 88-89 
MACOUSTIC 






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GOLD BOND ACOUSTI METAL 

National Gypsum Company, Pioneers in the Development of Acoustical Materials, 

Offers Acoustimetal as the Finest Product for Sound Correction 

Sound Absorption of 99% at 512 Frequency . . . Fireproof . . . Sanitary 

Among the products available for sound control treatment are 
many types and styles. One product may excel in sound absorp- 
tion; another in appearance and permanency; easy installation 
may be claimed for another and so on. Acoustimetal is outstand- 
ing in that it embodies all these separate features and, in short, 
provides everything that could be desired in an acoustical material. 

Acoustimetal is recommended for the finest jobs where sound 
correction or noise reduction is desired including churches, audi- 
toriums, offices, radio studios, corridors, restaurants, etc. Licensed 
under Burgess patents, it has an official sound absorption rating 
of 99% at frequency of 512 cycles. Supplied in perforated tile- 
like units with beautiful baked enamel finish, Acoustimetal is 
absolutely fireproof, sanitary and practically indestructible. 

High Light Reflection . . . 
Sanitary . . . Repaintable 

The subject of light reflection is of such importance that much 
research work has been done in perfecting the surface of Acousti- 
metal so that it meets the most exacting specifications of lighting 
engineers . . . incidentally, the beautiful finish of finest baked 
enamel is extremely durable and permits repeated scrubbings 
insuring absolute sanitation . . . Acoustimetal requires no further 
decoration but whenever a change in color is desired the surface 
may be repainted with brush or sprayer (the latter recommended) 
with no reduction in sound absorption. Any interior oil paint 
may be used or any of the non-bridging paints such as Sunflex 
or Gold Bond Casein Paint. The latter two paints are particu- 
larly recommended for high light reflection without glare. 



Units May Be Easily Removed and Replaced 

Although the units are securely locked in place with metal 
tee-bars, one or more units may easily be removed to make 
alterations or repairs in electric wiring, plumbing, etc. When the 
work has been completed, the units can be quickly replaced, 
saving the usual cost of patching and repainting the entire ceil- 
ing. This is of the utmost importance in office buildings where 
tenant alterations can be made at minimum cost. 

Sound Absorption 

The official sound absorption ratings shown below are per 
authority of the Acoustical Materials Association. 



Thick- 128 
ness 


256 


512 


1024 


2048 


Noise 
Reduction 
Coefficient 


li/ 4 " (pad) | .23 


.63 


.99 


.98 


.78 


.85 



Installed by Experienced Applicators 

National Gypsum Company has appointed 50 specially trained 
acoustical engineers in various districts of the United States to 
supervise the installation of Acoustimetal and other Gold Bond 
acoustical products. These agents or applicators, with an engi- 
neering background, are experts in sound control and may be 
called in by architects for consultation on acoustical problems. 
With these sound control specialists in charge of all Gold Bond 
acoustical installations, architects are assured of perfect workman- 
ship on every job regardless of its location. 




An Acoustimetal ceiling, modern, smart-looking, dignified, with effi- 
cient sound absorption insured for the life of the building. Here, an 
interesting design was obtained by alternating perforated and unper- 
forated Acoustimetal Units. 



84 




Component Parts 
the Gold Bond 
Acoustimetal System 



of 



Each Acoustimetal Unit com- 
prises the following parts pictured 
at left: The perforated metal cas- 
ing 12 x 24 in. indented through 
the middle to form 12 x 12 in. pan- 
els. This casing holds the sound 
absorbing pad of fireproof rock 
wool shown in the center. At the 
extreme right is the corrugated wire 
grid which is placed between the 
casing and the rock wool pad. In 
the lower left hand corner is the 
metal Tee-Bar which holds the 
units securely in place. 



(at right) The danger of falling material is eliminated with this 

system as the metal units are securely locked in place with steel 

Tee-Bars and become an integral part of the structure. 



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PERFORATED SURFACE 
Showing the Assembled Parts of an Acoustimetal Unit 



SPECIFICATIONS FOR GOLD BOND ACOUSTIMETAL 



SCOPE — Furnish and install Gold Bond Acoustimetal units to cover ceil- 
ing surfaces, exclusive of beams and other ceiling projections*, in the fol- 
lowing spaces: (List here the rooms where Acoustimetal unit ceilings are 
required, or refer to Schedule of room finishes). Gold Bond Acoustimetal 
units shall also be supplied and installed on wall surfaces as follows: (Give 
an exact description of the extent of wall surfaces to be covered.) 

WORK BY OTHERS— (a) Suspended Ceilings, Metal Furring: Con- 
tractor for metal furring shall supply and install lVi" hot rolled steel angles 
or channels in one direction not over 5'-0" on centers, rigidly suspended from 
the supporting structure according to standard practice, with the bottoms of 
angles or channels in a true and level plane 1%" above the finished ceiling 
level. A W2" angle or channel shall be placed 4" from walls or other ter- 
minating surfaces which parallel the direction of angles or channels. 

(b) Suspended Ceilings, Plaster: Others shall supply and install sus- 
pended ceilings of lath and plaster (scratch and brown coats), brought to a 
true and level surface 2%" above finished ceiling level. 

(c) Wood Framing: Contractor for carpentry shall supply and install 
wood framing members not over 4'-0" on centers, in one direction. They 
shall be properly suspended from supporting structure 1%" above finished 
ceiling level. 

(d) Wood Mouldings: If required, to be by carpenter contractor. 

MATERIALS — Acoustimetal units shall be of 26 gauge metal, perforated 
with .068" diameter holes. Units shall be 12" x 24" in size with exposed 
edges beveled. They shall be scored in center to give appearance of 12" x 12" 
beveled edge squares. The exposed surface shall be painted with two coats 
of baked enamel, and the inside with one coat of the same material. Color 
shall be white or cream, as selected. 

Rock Wool Pads: Shall be l 1 /," thick, and 12" x 24" in size. Pads shall 
be completely encased on all sides and edges in flame-proofed paper. 

Spacer Grids: Shall be galvanized wire. Projections on the grid shall be 
y 8 " deep, thus holding the rock wool pads from contact with the surface 
of the Acoustimetal units. 

*It is recommended that Acoustimetal units be installed on flat surfaces only, 
and that beams or similar projections be finished with standard materials. 
Tee bars, referred to in this specification, shall be the standard Acousti- 
metal supporting members made of 22 gauge copper bearing steel. 



The assembled Acoustimetal unit, spacer grid, and rock wool pad, shall 
have a sound absorption coefficient of .99 at 512 cycles, and a noise reduc- 
tion coefficient of .85, according to tests published by Acoustical Materials 
Association. 

INSTALLATION— (a) Suspended Ceilings, Metal Furring: Tee bars 

shall be secured to lVi" angles or channels with tie wire, metal clips or 
other fastener approved by the National Gypsum Company. 

(b) Suspended Ceilings, Lath and Plaster: 1" x 2" wood ground strips 
shall be installed by acoustical contractor, 4'-0" on centers. They shall be 
secured to the metal lath and plaster with toggle bolts. Tee bars shall then 
be fastened to the ground strips with screws and metal washers, the screws 
being driven alongside the flange of the tee bar to hold it in place. 

(c) Wood Framing: For method of installing tee bars against wood 
framing, see section (b) above. 

(d) Concrete Arch: Install 1" x 2" wood ground strips, using an 
approved anchor fastener, and install tee bars as outlined in section 
(b) above. 

(e) Hollow Tile Arch: Same as section (b) above. 

(f) Plaster Surface on Concrete or Hollow Tile Arch: Same as (d) 
or (e) above. 

(g) Bar Joist Construction: Tee bars shall be wired or clipped to 
bottom of joists, 

(h) Suspended Ceilings, Direct Suspension: Suspend tee bars at proper 
level by fastening to metal strap hangers which shall be securely anchored 
to supporting structure. Strap hangers shall not occur over 5'-0" on centers. 

In all cases, tee bars shall be 2'-0" on centers unless otherwise specified. 

Assemble spacer grids and rock wool pads in Acoustimetal units, and 
insert turned-up ends of units in tee bars. 

Around perimeter of surface composed of Acoustimetal units, the units 
shall be cut to fit against adjoining work. At this point the edges of the 
units shall be (a) supported by an edge channel section furnished by the 
acoustical contractor and fastened to the vertical wall or other bounding 
surface, the bottom flange of the edge channel which acts as a cover-head, 
being prime painted before installation ; (b) tacked to wood ground strips 
supplied and installed by acoustical contractor. Wood cover mouldings to 
conceal tack heads, to be supplied and installed by carpenter contractor. 



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GOLD BOND ACOUSTEX 

Highest Quality Fibre Acoustical Tile Made by National Gypsum Company 

For Sound Control and Noise Quieting 
Fire-Retardant . . . Distinctive, Textured Surface . . . Seven Colors 

THE Gold Bond line of materials for sound control comprises 
acoustical plaster, metal acoustical tile and several types of 
fibre acoustical tile. In the latter class, Gold Bond Acoustex 
ranks highest. 

Here is a product with high sound absorption, in a variety of 
thicknesses, capable of controlling noise reverberations to the 
split second; proved by thousands of successful installations in 
theaters, office buildings, radio studios, churches, hospitals, restau- 
rants. A tile that is fire-retardant, beautiful in appearance and 
permanent ; with an established prestige among acoustical engi- 
neers and architects. For two distinct purposes, acoustical correc- 
tion and noise quieting, Acoustex is outstanding. 

Description 

Acoustex is fabricated from selected wood that is shredded, 
then toughened by a hard-setting cement binder for extreme 
strength and durability. Retards fire effectively, is sanitary, easily 
cleaned. Impervious to mould growth and decay. Can be sawed 
like wood and is non-brittle — not likely to be broken in handling. 

Colors 

Supplied in Ivory, Cream, Buff, Light Gray, Apple Green, 
White and Natural (straw color). Where special colors are 
desired Acoustex may be painted to suit and incidentally may be 
redecorated again and again with no appreciable loss of sound 
absorption. Any interior oil paint may be used or any of the 
non-bridging paints such as Sunflex or Gold Bond Casein Paint. 
The latter two paints are particularly recommended where high 
light reflection without glare is desired. The decoration may be 
applied with brush or sprayer — preferably the latter — and a 
minimum of paint should be used. 

Installed by Experienced Applicators 

Gold Bond Acoustex is sold and supplied only by sound control 
engineers appointed by National Gypsum Company. This subject 
is covered in detail in the last paragraph on page 84. 

(in circle) Micro-photo showing mass of noise-trapping 
channels. 

(below) Showing the 
distinctive surface of 
Acoustex which harmo- 
nizes with practically 
any type of walls 

*Backed by 1" rock wool pad. 

Types of Mounting 

1. Cemented to plaster board. Considered equivalent to cementing to plaster 
or concrete ceiling. 

2. Nailed to 1" x 2" wood furring 12" o.c. unless otherwise indicated. 
6. Nailed to 2" x 4" wood furring 24" o.c. 
NOTE: Tbe surface of all samples tested was painted by manufacturer. 

Sizes and Thicknesses 



STANDARD ACOUSTEX 
TILE SIZES PLANK SIZES 

12 x 12 in. 6x24 in. Widths: 6, 12, 24 in. 

12 x 18 in. 18 x 18 in. Lengths: 30 to 96 in. 

12 x 24 in. in 6 in. increments. 

Thicknesses: 5/ 8 , %, %, 1, H/g in. 



Acoustex hushes sound within the room and also quiets outside 
street noises that enter through open windows or doors. 

High Sound Absorption 

The following ratings are per authority of the Acoustical 
Materials Association. 




Thickness 


Mounting 

(Described 

Below) 


Sound Absorption 


"oefficients 


Noise 
Reduction 
Coefficient 


128 


256 


)t2 


1024 


2048 


W' 


1 


.14 


.21 


42 


.78 


.85 


.55 


w 


2 


.22 


.23 


57 


.87 




72 


.60 


*y 8 " 


2 


.17 


.38 


98 


.96 




85 


.80 


%" 


1 


.16 


.27 


50 


.88 




80 


.60 


y 4 " 


2 


.22 


.30 


70 


.92 




79 


.70 


%" 


6 


.55 


.70 


84 


.75 




80 


.75 


%" 


1 


.24 


.29 


60 


.95 




83 


.65 


%" 


■> 


.24 


.40 


82 


.90 




72 


.70 


i" 


1 


.23 


.28 


63 


.95 




81 


.65 


l'/s" 


1 


.24 


.33 


74 


.96 




80 


.70 


Ws" 


2 


.30 


.43 


88 


.91 




80 


.75 



ACOUSTEX For Suspended Ceilings (Specially Grooved) 
TILE SIZES PLANK SIZES 

12 x 12 in. 12 x 24 in. Widths: 12 in. and 24 in. 

24x24 in. Lengths: 30 to 96 in. in. 6 in. increments 

Thicknesses: 1 in. and U/g in. 



GOLD BOND ECONACOUSTIC 

A Moderate Priced Acoustical Material That Decorates and Insulates 

Excels in Sound Absorption . . . 73% at Frequency of 512 Cycles 

Full I in. Thick . . . Distinctive Brushed Surface . . . Three Colors 

Gold Bond Econacoustic is made from selected southern hard- 
wood fibres by a special fabrication process that provides greater 
porosity without sacrificing strength. Actually, the material is 
a mass of intercommunicating channels that smother noise like 
magic. Lightweight, durable and permanent. A beautiful look- 
ing product, with distinctive brushed surface, it provides sound 
control, decoration and insulation in one operation, at a com- 
paratively low cost. 









'V ^ : ■ 







High Sound Absorption 

The following official ratings are per authority of the Acousti- 
il Materials Association. 



Thick- 


Sound Absorption Coefficients 


Noise 
reduction 
coefficient 


ness 


128 


256 


512 


1024 


2048 


1 in. 


.25 


.40 


.78 .76 


.79 


.70 



Bm& 



NOTE: The surface of this sample was painted by manufacturer. 

Thickness, Sizes and Colors 

Full 1 in. thick .... three sizes: 12 x 12, 12 x 24, 16 x 16 in., 
with beveled, butt edges all around. Brushed surface in three 
colors: Natural (two-tone Cream), also pre-painted Cream and 
White. Where special colors are desired, decorate with Gold 
Bond Casein Paint, Sunflex or any interior oil paint. Spray 
painting is recommended with a minimum of paint. 

Installed by Experienced Applicators 

Gold Bond Econacoustic is sold and applied only by sound 
control engineers, appointed by National Gypsum Co. This 
subject is covered in detail in the last paragraph on Page 84. 




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Here's smart styling for a large ceiling. Economical, too, because noise quieting, decoration and insulation are provided in one 

operation with Gold Bond Econacoustic. 

87 



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GOLD BOND TROWEL FINISH MACOUSTIC 

Fireproof Acoustical Plaster for Acoustical Correction and Noise 
Reduction . . . Sound Absorption of .50 at Frequency of 512 Cycles 
Applied l/ 2 Inch Thick . . . Supplied in White and Factory-Mixed Tints 



GOLD BOND TROWEL FINISH MACOUSTIC is a fire- 
proof acoustical plaster of unusually high sound absorption. 
Recommended for all types of new buildings where acoustical 
correction is advantageous such as theatres, auditoriums, churches, 
radio studios, etc. In buildings of this kind, Trowel Finish 
Macoustic is used to reduce reverberations and make hearing 
conditions ideal. 

Macoustic also excels as a sound absorptive material for use 
in hospitals, corridors, schoolrooms, libraries, swimming pools 
and restaurants— the objective in these cases being to subdue 
noise as much as possible. 

Macoustic is simply mixed with water and applied full V2 in- 
thick over a base of gypsum plaster, lime plaster, or portland 
cement. No special tools are required nor specially trained 
applicators. A regular steel trowel is used and any plasterer 
can do the work. 

Fireproof, Sanitary, Permanent 

Trowel Finish Macoustic, a mineral product, is fireproof, 
vermin proof and absolutely permanent. Because of the nature 
of the buildings in which acoustical material is generally used, 
namely hospitals, theatres, etc., the fireproof and sanitary qualities 
of the material are of vital importance. In selecting an acoustical 
material, consideration should be given to these qualifications as 
well as sound absorption and permanency. 




Sound Absorption 

The following ratings appear in Bulletin No. 6 issued by 
the Acoustical Material Association. They cover official tests of 
material applied under conditions simulating actual job condi- 
tions. Tests were conducted by Paul E. Sabine, Riverbank Labora- 
tories, Geneva, III. 

Sound Absorption Coefficients 





Thickness 


Frequency 


Material 


128 


256 


512 


1024 


2048 


Trowel Finish 
Matouscic 


Kinch 


.30 


.28 


-50 


.79 


•54 



Noise Reduction Coefficient .55. 

Federal Jobs— Gold Bond Trowel Finish Macoustic Plaster 
l/ 2 in. thick meets Federal Specifications for Plaster; Acoustic 
SS-P-391 at the following classifications: Class I for Auditorium 
Treatment . . . Class T for Noise Reduction. 



Colors 

Color No. 1 White (Natural Color) 
Color No. 5 Ivory 



Color No. 10 Cream 
Color No. 15 Buff 




(above) The surface of Trowel Finish Macoustic, full size. 

Under a magnifying glass this surface appears as a mass of 

tiny ducts which permit the entrance of sound. 



(left) Microphoto of internal cross-section of applied Trowel 
Finish Macoustic, magnified 32 times. This labyrinth of inter- 
communicating sound channels is created by the automatic 
bursting of millions of entrapped gas bubbles, while drying, 



88 



Special Decoration and Cleaning 

Where specifications call for special colors, Macoustic in white 
or ivory may be used and decorated (after application) with 
Gold Bond Casein Paint, Sunflex or other non-bridging paints, 
brushed or sprayed on (the latter is preferable). Oil paints 
should not be used as they will seal the surface and reduce the 
sound absorption. 

Macoustic may be cleaned by going over 
the surface with a hand vacuum cleaner. Or 
a cloth, dampened with a mild solution of 
Ivory soap and water, may be used. If the 
surface gets real dirty, it is generally more 
economical and quicker to redecorate as the 
cost of spraying with one coat of paint is 
very moderate. 

Swimming Pools 

Trowel Finish Macoustic may be used in 
swimming pools and similar places where 
the material will be subjected to almost con- 
stant high humidity but must be applied over 
a portland cement base. 



Have Sample OK'd Before Starting Job 

To acquaint plasterers on the job with the ease and simplicity 
with which Trowel Finish Macoustic is applied and the manner 
of finishing the surface, it is recommended that a few shovelfuls 
of the material be mixed and applied to some convenient wall 
space before starting the job. Have the architect approve this 
sample as standard for the job. 





(above) This Macoustic ceiling serves a double purpose. When 
the auditorium is used for assemblies, Macoustic reduces rever- 
berations and makes hearing conditions ideal. When used as a 
gym, noise is effectively hushed. 

(at left) This ceiling of sound-absorbing Macoustic is as per- 
manent as the building itself. Notice how it harmonizes 
perfectly with the floated walls of standard Gold Bond Plaster. 



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Specifications for Gold Bond Trowel Finish Macoustic 



Specifications 

1-1. Scope — Areas, as specified on plans, shall be covered with 
Gold Bond Trowel Finish Macoustic (state color number). 

1-2. Material — Acoustical plaster shall be Gold Bond Trowel 
Finish Macoustic Color Number (state number) as manu- 
factured by National Gypsum Company, Buffalo, N. Y. 
All Macoustic shall be delivered to the job in its original 
containers and nothing shall be added but clean water. 

Thickness — Macoustic shall be full V2 m - thick; applied in 
two Yi-'m. coats. 

Mixing and Applying — Macoustic shall be mixed and ap- 
plied strictly in accordance with instructions supplied by 
the manufacturer. 

Mixing 

Trowel Finish Macoustic, as delivered in bags, is ready for 
mixing with clean water. Nothing else may be added on the 
job. A slight excess of water is recommended during the soaking 
process and the mixture should be allowed to stand for an hour 
before using. Then, add enough dry material to bring the mass 
to a stiff working consistency. May be retempered if necessary. 
Overnight soaking is not recommended. A mechanical mixer, if 
available, is recommended. Give the mixture a brisk hoeing 
just before hodding. 



1-3 



1-4 



Application 

Trowel Finish Macoustic may be applied over a base of 
gypsum plaster, lime plaster, or portland cement- — -the base to be 
done dry and well scratched. Apply in two coats. The base 
(scratch) coat should be % in. thick, applied with a steel trowel 
and left as it comes from the trowel. Allow this first coat to 
stand overnight. 

Next, apply a second 1/4 in. coat of the same mix and bring to 
a true surface with as little troweling as possible. Allow to take 
up until free water has disappeared. Then drag trowel over the 
surface to eliminate trowel marks and to open up surface. 

Swimming Pools — -Trowel Finish Macoustic may be applied 
in swimming pools or similar buildings where it will be sub- 
jected to almost constant high humidity but must be applied over 
a base of portland cement rather than gypsum plaster. (Recom- 
mended base is composed of equal parts of portland cement and 
finish lime with two parts of sand.) 

Joinings— Joinings or lap marks should be avoided wherever 
possible by finishing one complete unit or panel at a time. 

Drying — Trowel Finish Macoustic is a slow drying material, 
requiring at least 10 days to dry thoroughly, depending upon 
temperature and drying conditions. It becomes progressively 
harder and stronger for a period of months after application. 



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NATIONAL GYPSUM CO., GENERAL OFFICES, BUFFALO, N .Y.